(x+y)^2+9(x-y)^2-6(x^2-y^2)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/28 06:26:07
(x+y)^2+9(x-y)^2-6(x^2-y^2)(x+y)^2+9(x-y)^2-6(x^2-y^2)(x+y)^2+9(x-y)^2-6(x^2-y^2)原式=x^2+2xy+y^2+9x^2
(x+y)^2+9(x-y)^2-6(x^2-y^2)
(x+y)^2+9(x-y)^2-6(x^2-y^2)
(x+y)^2+9(x-y)^2-6(x^2-y^2)
原式=x^2+2xy+y^2+9x^2-18xy+9y^2-6x^2+6y^2=4x^2-16xy+16y^2
(x+y)^2+9(x-y)^2-6(x^2-y^2)
=(x+y)²-2×(x+y)×3(x-y)+[3(x-y)]²
=[(x+y)-3(x-y)]²
=(4y-2x)²
=4(x-2y)²
(x+y)^2+9(x-y)^2-6(x^2-y^2)
=(x+y-3x+3y)^2
=(-2x+4y)^2
=4(x-2y)^2
不懂可追问，有帮助请采纳，谢谢！
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
(x+y)^2+6(x+y)+9
(x-2y)^2-6(2y-x)(x+y)+9(x+y)^2因式分解
81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2
计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2
9(x+y)-2(x+y)-6(x+y)+18(x+y)合并同类项
合并同类项：9(x+y)-2(x+y)-6(x+y)+18(x+y)
x^3y^2+6x^2y+9x
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
化简y(x+y)+(x+y)(x-y)-x^2
因式分解x(x+y)(x-y)-x(x+y)^2
计算:(x-y)^2*(y-x)^2*(x-y)^6
6(x+y)2-2(x-y)(x+y)因式分解
因式分解3x^2(x-y)+6x(y-x)
(x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2
9(x-y)-12(y-x)^2
(x+y)^2-9(x+y)+18