Im am confused can someone help me?

Question

0

257

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Given that 2^x=7, find the value of 4^x-1

I dont even know where to start :(

Guest Nov 6, 2021

edited by Guest Nov 6, 2021

Guest · Answer 1 · 2021-11-06T03:57:32

4^x-1 = 13

Guest · Answer 2 · 2021-11-06T05:32:58

4^x -1

(2²) ^x - 1

(2^x)² - 1 sub in 2^x=7

7² -1 = 48