Find the x-intercepts.
-$$f ( x ) = 2 x ^ { 2 } - 20 x + 18$$
A) $x$-intercepts $( 1,0 )$ and $( 9,0 )$
B) $x$-intercepts $( - 1,0 )$ and $( 9,0 )$
C) $x$-intercepts $( - 1,0 )$ and $( - 9,0 )$
D) $x$-intercepts $( 1,0 )$ and $( - 9,0 )$

Question

Quizplus · Accepted Answer

To find the x-intercepts, set $f(x) = 0$: $2x^2 - 20x + 18 = 0$. Factoring or using the quadratic formula, we find the roots $x = 1$ and $x = 9$, corresponding to the points $(1,0)$ and $(9,0)$.

Find the X-Intercepts f(x)=2x2−20x+18f ( x ) = 2 x ^ { 2 } - 20 x + 18f(x)=2x2−20x+18

Find the X-Intercepts $f ( x ) = 2 x ^ { 2 } - 20 x + 18$