计算:(1)(x+y)^9/(x+y)^5(2)(x^2+x+1)/(3)0.0001^0(4)(x+3y/2x-y)^-4

问题描述:

计算:(1)(x+y)^9/(x+y)^5(2)(x^2+x+1)/(3)0.0001^0(4)(x+3y/2x-y)^-4

1)(x+y)^9/(x+y)^5=(x+y)^(9-5)=(x+y)^4
(2)(x^2+x+1)/
(3)0.0001^0=1
(4)(x+3y/2x-y)^(-4)=(2x-y)^4/(x+3y)^4
应用指数运算规则:
(a^m) (a^n)=a^(m+n)
(a^m)/ (a^n)=a^(m-n)
a^0=1
a^(-m)=1/a^m