Question

Simplify 2^3 + 2^a =72
pls help
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Answer 1

8+2^a=72
2^a=64
2^6=2^a=64
A=6

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Answer 2

Answer:

${2}^{3} + {2}^{a} = 72 \\ \\ = > 8 + {2}^{a} = 72 \\ \\ = > {2}^{a} = 72 - 8 \\ \\ = > {2}^{a} = 64 \\ \\ = > {2}^{a} = {2}^{6} \\ \\ = > a = 6 \\ \\ identity \: used \\ \\ {a}^{m} = {a}^{n} \\ \\ = > m = n$

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