Question

Sabendo que 16^x+2 = 128^x+1, calcule o valor de x^3-2

Answer 1

$16^{x+2} = 128^{x+1} 2^4^{(x+2)} = 2^7^{(x+1)} 4x +8 = 7x +7 4x - 7x = 7 -8 -3x = -1 x= 1/3 ( 1/3)^{3} -2 1/27 -2 mmc 27 1/27 - 54/27 -53/27$