Solve i)8^n + 8^(n+1) =72 ii)7^2n = 49 X 7^n
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Answer:
n=7
Step-by-step explanation:
7^2n=49*7^n
=7^2n÷7^n=49
=7^2n-n=49
=7^n=49
=n=49÷7
=n=7
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