Factor the perfect square trinomial completely.
-$x ^ { 2 } + 30 x + 225$
A) $( x - 15 ) ^ { 2 }$
B) $( x + 15 ) ^ { 2 }$
C) $( x + 15 ) ( x - 15 )$
D) prime

Question

Quizplus · Accepted Answer

The given trinomial is a perfect square because the square root of $x^2$ is $x$, the square root of $225$ is $15$, and twice the product of $x$ and $15$ gives the middle term $30x$. Therefore, it factors as $(x + 15)^2$.

Factor the Perfect Square Trinomial Completely x2+30x+225x ^ { 2 } + 30 x + 225x2+30x+225

Factor the Perfect Square Trinomial Completely $x ^ { 2 } + 30 x + 225$