(-2x^4y^5)^3*(-3x^3y^2)^2\(-12x^10y^10)

问题描述:

(-2x^4y^5)^3*(-3x^3y^2)^2\(-12x^10y^10)
还有;(x^n+5)^n\(x^n+5)^n-2

原式=(-8x^12y^15)(9x^6y^4)\(-12x^10y^10)=(8*9\12)*x^(12+6-10)*y^(15+4-10)=6x^8y^9 原式=x^[n(n+5)]\x^[(n+5)(n+2)]=x^(n²+5n)\x^(n²+7n+10)=x^(n²+5n-n²-7n-10)=x^(-2n-10)