Factor the perfect square trinomial completely.
-$25 x ^ { 2 } - 70 x + 49$
A) $( 25 x + 1 ) ( x + 49 )$
B) $( 5 x - 7 ) ^ { 2 }$
C) $( 5 x - 7 ) ( 5 x + 7 )$
D) $( 5 x + 7 ) ^ { 2 }$

Question

Quizplus · Accepted Answer

The given trinomial is a perfect square because it can be written in the form $(ax - b)^2$ where $a = 5$ and $b = 7$, thus $(5x - 7)^2$.

Factor the Perfect Square Trinomial Completely 25x2−70x+4925 x ^ { 2 } - 70 x + 4925x2−70x+49

Factor the Perfect Square Trinomial Completely $25 x ^ { 2 } - 70 x + 49$