Find the x-intercepts (if any) for the graph of the quadratic function.
-$$f ( x ) = 2 x ^ { 2 } - 2 x - 4$$
A) $( - 2,0 )$ and $( - 1,0 )$
B) $( 2,0 )$ and $( - 1,0 )$
C) $( - 2,0 )$ and $( 1,0 )$
D) $( 2,0 )$ and $( 1,0 )$

Question

Quizplus · Accepted Answer

To find the x-intercepts, set $f(x) = 0$: $2x^2 - 2x - 4 = 0$. Factoring or using the quadratic formula, $x = 2$ and $x = -1$, so the x-intercepts are $(2,0)$ and $(-1,0)$.

Find the X-Intercepts (If Any) for the Graph of the Quadratic