Simplify 3 2n 1 - 4 2n-1 2n 1 - 2n - JAMB Mathematics 2000 Question
Simplify 3(2n+1) - 4(2n-1) 2n+1 - 2n
A
2n+1
B
2n-1
C
4
D
1/4
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Correct Option: C
Start by expanding 3(2n+1) - 4(2n-1) 2n+1 - 2n:
3 x 2n x 21 - 22 x 2n x 2-1 2n x 2 -2n
Solving the equation above gives;
2n x 21 x 2 2n = 2 x 2 = 4
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