Question

计算：①(3分之2)^2②(y分之2x)^2③a*a^2分之1除以a^2

Answer 1

1 (2/3)²=(2/3)*(2/3)=4/9

2 (2x/y)²=4x²/y²

3 a*a^(1/2)/a²=a^(3/2)/a²=a^(3/2-2)=a^(-1/2)