4（x-2y)^2-8x+16y+3
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4（x-2y)^2-8x+16y+34（x-2y)^2-8x+16y+34（x-2y)^2-8x+16y+34（x-2y)^2-8x+16y+3=4（x-2y)^2-8(x-2y)+3=[2(x-2y
4（x-2y)^2-8x+16y+3
4（x-2y)^2-8x+16y+3
4（x-2y)^2-8x+16y+3
4（x-2y)^2-8x+16y+3
=4（x-2y)^2-8(x-2y)+3
=[2(x-2y)-3][2(x-2y)-1]
=(2x-4y-3)(2x-4y-1)
4x-3y/x-2y÷6y-8x/y-2x
81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
4（x-2y)^2-8x+16y+3
因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y)
3分之2(x-y)-4分之x+y=-1 8(x+y)-4(2x-y)=16
8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16
8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16
x^3+2x^2y-4x-8y
计算:1/(x-y)-1/(x+y)-2y/(x^2+y^2)-4y^3/(x^4+y^4)-8x^7/(x^8+y^8)
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
16-8（x-y)+(x-y)2
1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y(x-y)^2）/2（x-y)^2
【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+3y-4)(2x-y)
计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y)
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian