4x2x - 4x2x-2/2x - 2x-1 = 4x(2x - 2x-2)/[2x-1(2 - 1)] = 4x2x-2(22 - 1)/2x- 1 = 3x2x/2x-1 = 6x
The steps all use algebraic operations including the laws of exponents.
Pieter V.
asked 10/09/18
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