Question

[PINK HELLO KITTY]

tìm x: -0,00001=(-0,1)^X

Answer 1

[Nguyễn Huệ Lam]

\(-0,00001=\left(-0,1\right)^x.\)

\(\Leftrightarrow-\frac{1}{100000}=\left(-\frac{1}{10}\right)^x\)

\(\Leftrightarrow\left(-\frac{1}{10}\right)^5=\left(-\frac{1}{10}\right)^x\)

\(\Rightarrow x=5\)