7 4x2 4x 1 0. 4x2+4x+1. x2-4=2x-1. x^2+4x>(x+2)^2. 4^x+1 - 2^2x-2 = 60.

7 4x2 4x 1 0. 4x2+4x+1. x2-4=2x-1. x^2+4x>(x+2)^2. 4^x+1 - 2^2x-2 = 60.
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