2x^2-xy-15y^2

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/14 03:29:56

2x^2-xy-15y^2
2x^2-5x-12

2x^2-xy-15y^2
=2x²-6xy+5xy-15y²
=2x(x-3y)+5y(x-3y)
=(x-3y)(2x+5y)
2x^2-5x-12
=2x²-8x+3x-12
=2x(x-4)+3(x-4)
=(x-4)(2x+3)

（xy-x^2)乘以(xy)/(x-y) （x^2+xy/x-y)/（xy/x-y)计算 (x+y-2xy)(x+y-2)+(1-xy)² (x^2-xy)y÷y-x/xy怎么做? 2x^2-xy-15y^2 6x^2y^2+xy-15 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y) x-y/x²÷x²-2xy+y²/xy*（xy-x²）作乘法:(x+y)(x^2-xy+y^2)；(x-y)(x^2+xy+y^2) x^2-xy-6y^2+3xy+y+2 计算（xy-y^2)÷x-y/xy 因式分解：x×x-xy-2y×y-x-y