Question

помогите,пожалуйста.

Answer 1

$5*5^{3-2x}=25^{4-3x} \\5^{1+3-2x}=5^{2(4-3x)}\\5^{4-2x}=5^{8-6x}\\4-2x=8-6x\\-2x+6x=8-4\\4x=4\\x=4:4\\x=1\\Otvet:1$

$36^{x}-4*6^{x}-12=0\\(6^{x})^{2}-4*6^{x}-12=0\\6^{x}=m;m>0\\m^{2}-4m-12=0\\m_{1}=6\\m_{2}=-2<0\\6^{x}=6\\x=1\\Otvet:1$