x^2+2xy+y^2+3x+3y+2
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x^2+2xy+y^2+3x+3y+2
![x^2+2xy+y^2+3x+3y+2](/uploads/image/z/18038771-35-1.jpg?t=x%5E2%2B2xy%2By%5E2%2B3x%2B3y%2B2)
(x+y)^2+3(x+y)+2=(x+y+1)(x+y+2)
用十字相乘法将2分为1乘2
用十字相乘法将2分为1乘2
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
(x+y)(x-y)-(2xy+3y)平方
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
x^2-xy-6y^2+3xy+y+2
(3xy)平方/(-xy)+(x-2y)平方-(x+2y)(x-2y)=
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
(-3x^y+2xy)-( )=4x^+xy
x^3y+2x^2y^3+xy^3
因式分解 x^2-2xy-3y^2+x+y