(2^x+4)^x-3=0,5^x*4^x-4

Question

(2^x+4)^x-3=0,5^x*4^x-4

Answer 1

2^[(x+4)(x-3)]=2^(-x+2x-8)
(x+4)(x-3)=(x-8)
x²-3x+4x-12-x+8=0
x²-4=0
(x-2)(x+2)=0
x=2  x=-2