Factor the trinomial completely. If the polynomial cannot be factored, write "prime."
-$x ^ { 2 } + 4 x - 45$
A)(x - 5)(x + 9)
B)(x + 5)(x + 1)
C)(x + 5)(x + 9)
D)prime

Question

Quizplus · Accepted Answer

The trinomial $x^2 + 4x - 45$ can be factored into (x - 5)(x + 9) because these factors multiply to give the original trinomial: $x^2 + 9x - 5x - 45$, which simplifies to $x^2 + 4x - 45$.

Factor the Trinomial Completely x2+4x−45x ^ { 2 } + 4 x - 45x2+4x−45

Factor the Trinomial Completely $x ^ { 2 } + 4 x - 45$