Chapter 6

Introductory Algebra for College Students · 696 exercises

Problem 42

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$15 x^{2}-19 x+6$$

3 step solution

Problem 43

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$4 w^{2}+8 w-5$$

5 step solution

Problem 43

Factor completely. $$3 x^{2}+15 x+18$$

3 step solution

Problem 43

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$x(x-4)=21$$

4 step solution

Problem 43

Factor completely, or state that the polynomial is prime. $$-5 y^{3}+20 y$$

4 step solution

Problem 43

Factor each polynomial using the greatest common factor. If there is no common factor other than 1 and the polynomial cannot be factored, so state. $$6 x^{3} y^{2}+9 x y$$

4 step solution

Problem 43

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$2 x^{2}+3 x y+y^{2}$$

3 step solution

Problem 44

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$35 w^{2}-2 w-1$$

4 step solution

Problem 44

Factor completely. $$3 x^{2}+21 x+36$$

4 step solution

Problem 44

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$x(x-3)=18$$

5 step solution

Problem 44

Factor completely, or state that the polynomial is prime. $$-54 y^{3}+6 y$$

3 step solution

Problem 44

Factor each polynomial using the greatest common factor. If there is no common factor other than 1 and the polynomial cannot be factored, so state. $$4 x^{2} y^{3}+6 x y$$

3 step solution

Problem 44

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$3 x^{2}+4 x y+y^{2}$$

3 step solution

Problem 45

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$x^{3}-4 x$$

5 step solution

Problem 45

Factor completely. $$4 y^{2}-4 y-8$$

4 step solution

Problem 45

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$4 x(x+1)=15$$

6 step solution

Problem 45

Factor any perfect square trinomials, or state that the polynomial is prime. $$x^{2}+2 x+1$$

3 step solution

Problem 45

Factor each polynomial using the greatest common factor. If there is no common factor other than 1 and the polynomial cannot be factored, so state. $$30 x^{2} y^{3}-10 x y^{2}+20 x y$$

3 step solution

Problem 45

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$3 x^{2}+5 x y+2 y^{2}$$

2 step solution

Problem 46

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$9 x^{3}-9 x$$

3 step solution

Problem 46

Factor completely. $$3 y^{2}+3 y-18$$

2 step solution

Problem 46

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$x(3 x+8)=-5$$

4 step solution

Problem 46

Factor any perfect square trinomials, or state that the polynomial is prime. $$x^{2}+4 x+4$$

2 step solution

Problem 46

Factor each polynomial using the greatest common factor. If there is no common factor other than 1 and the polynomial cannot be factored, so state. $$27 x^{2} y^{3}-18 x y^{2}+45 x^{2} y$$

3 step solution

Problem 46

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$3 x^{2}+11 x y+6 y^{2}$$

3 step solution

Problem 47

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$x^{2}+64$$

3 step solution

Problem 47

Factor completely. $$10 x^{2}-40 x-600$$

4 step solution

Problem 47

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$(x-1)(x+4)=14$$

5 step solution

Problem 47

Factor any perfect square trinomials, or state that the polynomial is prime. $$x^{2}-14 x+49$$

3 step solution

Problem 47

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$2 x^{2}-9 x y+9 y^{2}$$

4 step solution

Problem 48

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$y^{2}+36$$

3 step solution

Problem 48

Factor completely. $$2 x^{2}+10 x-48$$

3 step solution

Problem 48

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$(x-3)(x+8)=-30$$

3 step solution

Problem 48

Factor any perfect square trinomials, or state that the polynomial is prime. $$x^{2}-10 x+25$$

3 step solution

Problem 48

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$3 x^{2}+5 x y-2 y^{2}$$

2 step solution

Problem 49

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$9 y^{2}+13 y+4$$

3 step solution

Problem 49

Factor completely. $$3 x^{2}-33 x+54$$

4 step solution

Problem 49

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$(x+1)(2 x+5)=-1$$

4 step solution

Problem 49

Factor each polynomial using the negative of the greatest common factor. $$-12 x^{2}+18$$

3 step solution

Problem 49

Factor any perfect square trinomials, or state that the polynomial is prime. $$x^{2}-2 x+1$$

3 step solution

Problem 49

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$6 x^{2}-5 x y-6 y^{2}$$

5 step solution

Problem 50

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$20 y^{2}+12 y+1$$

2 step solution

Problem 50

Factor completely. $$2 x^{2}-14 x+24$$

5 step solution

Problem 50

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$(x+3)(3 x+5)=7$$

6 step solution

Problem 50

Factor each polynomial using the negative of the greatest common factor. $$-15 x^{2}+20$$

3 step solution

Problem 50

Factor any perfect square trinomials, or state that the polynomial is prime. $$x^{2}-4 x+4$$

3 step solution

Problem 50

Use the method of your choice to factor each trinomial, or state that the trinomial is prime. Check each factorization using FOIL multiplication. $$6 x^{2}-7 x y-5 y^{2}$$

7 step solution

Problem 51

Now let's move on to factorizations that may require two or more techniques. Factor completely, or state that the polynomial is prime. Check factorizations using multiplication or a graphing utility. $$y^{3}+2 y^{2}-4 y-8$$

4 step solution

Problem 51

Factor completely. $$2 r^{3}+6 r^{2}+4 r$$

3 step solution

Problem 51

Use factoring to solve each quadratic equation. Check by substitution or by using a graphing utility and identifying \(x\) -intercepts. $$y(y+8)=16(y-1)$$

5 step solution

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