Simplify: 1 / 4 (2 n - 2 n+2 )
MATHEMATICS
WAEC 1991
Simplify:1/4(2n - 2n+2)
- A. 2n2 - 2n
- B. 2n-2(1-2n)
- C. 2n + 22n + 2
- D. 22n
Correct Answer: A. 2n2 - 2n
Explanation
1/4(2n - 2n+2) = 2-2(2n - 2n x 22) = 2n x-2(1 - 22)= 22n-2
(20 - 22) = 22n-2 - 2n
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