Question

determine o conjunto soluçao das seguintes equaçoes exponenciais do 2 tipo 5x+1 + 5x+2 = 30

Answer 1

$5^{x+1} + 5^{x+2} = 30\\\\ 5^{x+1}\ .\ (1 + 5 ) = 30\\\\ 5^{x+1}\ .\ 6 = 30\\\\ 5^{x+1}\ =\dfrac{30}{6}\\\\ 5^{x+1}\ = 5^1\\\\ x + 1 = 1\\\\ x = 1-1\\\\ x = 0\\\\  =)$