Simplify 324−4x22x+18

Question 1 Report

Simplify $\frac{324 - 4 x^{2}}{2 x + 18}$

2(x - 9)

2(9 + x)

81 - x2

-2(x - 9)

Answer Details

$\frac{324 - 4 x^{2}}{2 x + 18}$ = $\frac{18^{2} - (2 x)^{2}}{2 x + 18}$
= $\frac{(18 - 2 x) (18 + 2 x)}{(2 x + 18)}$
18 - 2x = 2(9 - x)
or -2(x - 9)