Chapter 7
Elementary Algebra · 323 exercises
Problem 109
Factor each trinomial of the form \(x^{2}+b x y+c y^{2}\). \(x^{2}-3 x y-14 y^{2}\)
5 step solution
Problem 110
Factor each trinomial of the form \(x^{2}+b x y+c y^{2}\). \(u^{2}-8 u v-24 v^{2}\)
4 step solution
Problem 111
Factor each trinomial of the form \(x^{2}+b x y+c y^{2}\). \(m^{2}-5 m n+30 n^{2}\)
4 step solution
Problem 112
Factor each trinomial of the form \(x^{2}+b x y+c y^{2}\). \(c^{2}-7 c d+18 d^{2}\)
5 step solution
Problem 113
Factor each expression. \(u^{2}-12 u+36\)
4 step solution
Problem 114
Factor each expression. \(w^{2}+4 w-32\)
5 step solution
Problem 115
Factor each expression. \(x^{2}-14 x-32\)
4 step solution
Problem 116
Factor each expression. \(y^{2}+41 y+40\)
3 step solution
Problem 117
Factor each expression. \(r^{2}-20 r s+64 s^{2}\)
3 step solution
Problem 118
Factor each expression. \(x^{2}-16 x y+64 y^{2}\)
3 step solution
Problem 119
Factor each expression. \(k^{2}+34 k+120\)
6 step solution
Problem 120
Factor each expression. \(m^{2}+29 m+120\)
4 step solution
Problem 121
Factor each expression. \(y^{2}+10 y+15\)
3 step solution
Problem 122
Factor each expression. \(z^{2}-3 z+28\)
4 step solution
Problem 123
Factor each expression. \(m^{2}+m n-56 n^{2}\)
5 step solution
Problem 124
Factor each expression. \(q^{2}-29 q r-96 r^{2}\)
5 step solution
Problem 125
Factor each expression. \(u^{2}-17 u v+30 v^{2}\)
5 step solution
Problem 126
Factor each expression. \(m^{2}-31 m n+30 n^{2}\)
6 step solution
Problem 128
Factor each expression. \(r^{2}+11 r s+36 s^{2}\)
5 step solution
Problem 129
Deirdre is thinking of two consecutive integers whose product is 56. The trinomial \(x^{2}+x-56\) describes how these numbers are related. Factor the trinomial.
5 step solution
Problem 130
Deshawn is thinking of two consecutive integers whose product is 182 . The trinomial \(x^{2}+x-182\) describes how these numbers are related. Factor the trinomial.
6 step solution
Problem 131
Many trinomials of the form \(x^{2}+b x+c\) factor into the product of two binomials \((x+m)(x+n)\). Explain how you find the values of \(m\) and \(n\).
4 step solution
Problem 133
Will factored \(x^{2}-x-20\) as \((x+5)(x-4)\). Bill factored it as \((x+4)(x-5)\). Phil factored it as \((x-5)(x-4) .\) Who is correct? Explain why the other two are wrong.
5 step solution
Problem 135
Identify the best method to use to factor each polynomial. (a) \(10 q^{2}+50\) (b) \(a^{2}-5 a-14\) (c) \(u v+2 u+3 v+6\)
3 step solution
Problem 136
Identify the best method to use to factor each polynomial. (a) \(n^{2}+10 n+24\) (b) \(8 u^{2}+16\) (c) \(p q+5 p+2 q+10\)
3 step solution
Problem 137
Identify the best method to use to factor each polynomial. (a) \(x^{2}+4 x-21\) (b) \(a b+10 b+4 a+40\) (c) \(6 c^{2}+24\)
6 step solution
Problem 138
Identify the best method to use to factor each polynomial. (a) \(20 x^{2}+100\) (b) \(u v+6 u+4 v+24\) (c) \(y^{2}-8 y+15\)
3 step solution
Problem 139
Factor completely. \(5 x^{2}+35 x+30\)
4 step solution
Problem 140
Factor completely. \(12 s^{2}+24 s+12\)
3 step solution
Problem 141
Factor completely. \(2 z^{2}-2 z-24\)
6 step solution
Problem 142
Factor completely. \(3 u^{2}-12 u-36\)
4 step solution
Problem 143
Factor completely. \(7 v^{2}-63 v+56\)
4 step solution
Problem 144
Factor completely. \(5 w^{2}-30 w+45\)
4 step solution
Problem 145
Factor completely. \(p^{3}-8 p^{2}-20 p\)
3 step solution
Problem 146
Factor completely. \(q^{3}-5 q^{2}-24 q\)
3 step solution
Problem 147
Factor completely. \(3 m^{3}-21 m^{2}+30 m\)
5 step solution
Problem 148
Factor completely. \(11 n^{3}-55 n^{2}+44 n\)
4 step solution
Problem 149
Factor completely. \(5 x^{4}+10 x^{3}-75 x^{2}\)
4 step solution
Problem 150
Factor completely. \(6 y^{4}+12 y^{3}-48 y^{2}\)
5 step solution
Problem 151
Factor. \(2 t^{2}+7 t+5\)
5 step solution
Problem 152
Factor. \(5 y^{2}+16 y+11\)
5 step solution
Problem 153
Factor. \(11 x^{2}+34 x+3\)
6 step solution
Problem 154
Factor. \(7 b^{2}+50 b+7\)
6 step solution
Problem 155
Factor. \(4 w^{2}-5 w+1\)
6 step solution
Problem 156
Factor. \(5 x^{2}-17 x+6\)
7 step solution
Problem 157
Factor. \(6 p^{2}-19 p+10\)
6 step solution
Problem 158
Factor. \(21 m^{2}-29 m+10\)
6 step solution
Problem 159
Factor. \(4 q^{2}-7 q-2\)
6 step solution
Problem 160
Factor. \(10 y^{2}-53 y-11\)
6 step solution
Problem 161
Factor. \(4 p^{2}+17 p-15\)
7 step solution