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If 2^x-2^x-2 = 3(2^13) , what is the value of x a. 9 b. 11 c. 13 d. 15 e. 17 I can get the answer by plugging in answer choices but I would like to understand how to correctly derive the answer.

where did the 3/4 on the left side and 3 on the right side gone?
And in this kind of question it is easier to take out of parentheses the smallest exp try it
and X-2=13--->X=15 _________________

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