Factor the trinomial completely. If the polynomial cannot be factored, write "prime."
-$2 x ^ { 2 } - 20 x + 42$
A)2(x + 7)(x + 3)
B)2(x - 7)(x - 3)
C)(x + 7)(2x + 6)
D)(2x + 7)(x + 3)

Question

Quizplus · Accepted Answer

The correct factoring of $2x^2 - 20x + 42$ is $2(x^2 - 10x + 21)$. Factoring the quadratic inside the parentheses further gives $2(x - 7)(x - 3)$, which matches option B.

Factor the Trinomial Completely 2x2−20x+422 x ^ { 2 } - 20 x + 422x2−20x+42

Factor the Trinomial Completely $2 x ^ { 2 } - 20 x + 42$