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