Factor the polynomial completely. If the polynomial cannot be factored, write "prime."
-$x ^ { 2 } - 7 x - 18$
A)(x - 2)(x + 1)
B)prime
C)(x + 2)(x - 9)
D)(x - 2)(x - 9)

Question

Quizplus · Accepted Answer

The correct factorization is found by looking for two numbers that multiply to -18 and add to -7. Those numbers are +2 and -9, leading to the factors (x + 2)(x - 9).

Factor the Polynomial Completely x2−7x−18x ^ { 2 } - 7 x - 18x2−7x−18

Factor the Polynomial Completely $x ^ { 2 } - 7 x - 18$