Simplify (frac{324 – 4x^2}{2x + 18})
-
A.
2(x – 9) -
B.
2(9 + x) -
C.
81 – x(^2) -
D.
-2(x – 9)
Correct Answer: Option D
Explanation
234 – 4x(^2) = 18(^2) – (2x)(^2) = (18 – 2x)(18 + 2x)
2x + 18 = 2x + 18 = (2x + 18)
18 – 2x = 2(a – x) or -2(x – a)
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