Question

Resolva 2 elevado a 2x-4.2 elevado a x+4=0
(A)0
(B)1
(C)2
(D)3

Answer 1

Resolva 2 elevado a 2x-4.2 elevado a x+4=0
2^2x-4.2^x+4 = 0
2^2x-4.2^x+4 = 0
2^(2x+x +4-4) = 0
2^3x = 0