Bài 1:
a. \(\frac{15^3.\left(-5\right)^4}{\left(-3\right)^5.5^6}\)
b. \(\frac{6^3.2.\left(-3\right)^2}{\left(-2\right)^9.3^7}\)
c. \(\frac{3^6.7^2-3^7.7}{3^7.21}\)
Bài 2:
a. \(\left(x-1,2\right)^2=4
\)
b.\(\left(x+1\right)^3=-125\)
c. \(\left(x-5\right)^3=2^6\)
d. \(\left(2x+1\right)^{x+1}=5^{x+1}\)
e. \(\left(5-x\right)^2+\left(5-x\right)^5=0\)
f. \(\left(1-2x\right)^4-\left(1-2x\right)^6=0\)
g. \(3^{4-x}+1=26\)
h. \(\left(7x+2\right)^{-1}=3^{-2}\)