5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2求

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 04:06:45
5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2求

5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2求
5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2
求

5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2求
5xy²-[3xy²-(4xy²-2x²y)]+2x²y-xy²
=5xy²-（3xy²-4xy²+2x²y）+2x²y-xy²
=5xy²-(-xy²+2x²y)+2x²y-xy²
=5xy²+xy²-2x²y+2x²y-xy²
=(5xy²+xy²-xy²)+(-2x²y+2x²y)
=5xy²

(-3xy+2xy)-(4xy+xy) 3xy-4xy-（-2xy） 3xy-4xy-（-2xy） 3xy-3xy-xy+2yx 1.3xy -4xy-(2xy) 2xy.(-3xy)÷(xy) 2xy-xy-(-3xy)= [(2xy-3)(2xy+3)+(xy+3)^2]/(-xy) xy－3xy＋2xy－xy (-4xy^3)×（-xy）+（-3xy^2）^2 （-3xy^2)^2+(-4xy^3)*(-xy)=多少 (-4xy^3)*(-xy)+(-3xy^2)^2 (3xy^2)^2+(-xy^3)(4xy) 3xy^2*(-2xy) 2xy(5xy的2次方+3xy-1) 2xy(5xy的2次方+3xy-1) 计算-xy-(4z-2xy)-(3xy-4z) -xy(4z-2xy)-(3xy-4z) 化简