Question

Найти корень уравнения:
4^x-7=1/64

Answer 1

Ответ:

${4}^{x - 7} = \frac{1}{64} \\ {4}^{x - 7} = {4}^{ - 3} \\ x - 7 = - 3 \\ x = - 3 + 7 \\ x = 4$

Answer 2

$\displaystyle\bf\\4^{x-7} =\frac{1}{64}\\\\\\4^{x-7} =\frac{1}{4^{3} } \\\\\\4^{x-7}=4^{-3} \\\\\\x-7=-3\\\\\\x=-3+7\\\\\\\boxed{\boxed{x=4}}$