Solve for k in the equation \(\frac{1}{8}^{k+2}\) = 1
MATHEMATICS
JAMB 2022
Solve for k in the equation \(\frac{1}{8}^{k+2}\) = 1
- A. 2
- B. -4
- C. -2
- D. 4
Correct Answer: C. -2
Explanation
\((8^{-1})^{k+2}\) = \((8^{0})\)
base 8 cancel out on both sides
-1(k+2) = 0
-k -2 = 0
: k = -2
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