What inputs are defined for the expression? $$\frac { 9 x } { x ^ { 2 } - 9 x + 18 }$$
A) $R , x \neq 3 , x \neq 5$
B) $R , x \neq 2 , x \neq 9$
C) $R , x \neq 5 , x \neq 7$
D) $R , x \neq - 2 , x \neq - 9$
E) $R , x \neq 3 , x \neq 6$

Question

Quizplus · Accepted Answer

The expression is undefined where the denominator is zero. Solving $x^2 - 9x + 18 = 0$ gives roots $x = 3$ and $x = 6$.

What Inputs Are Defined for the Expression 9xx2−9x+18\frac { 9 x } { x ^ { 2 } - 9 x + 18 }x2−9x+189x​

What Inputs Are Defined for the Expression $\frac { 9 x } { x ^ { 2 } - 9 x + 18 }$