Please Explain how my professor solved this summation. 2^k + 2^(k+1) + 2^(k+2) + .................. +...

Question

Question

Please Explain how my professor solved this summation.

2^k + 2^(k+1) + 2^(k+2) + .................. + 2^(2k)

Answer: 2^(2k + 1) - 2^k

^ = Exponent

math calculus

Answer 1

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