(2x-3y)的平方 2(2x-3y)(3x 2y)-搜答案-灵鹊做题网

x^2=x的平方‘/’为除以[(x+2y)^2-(x+y)(x-y)-5y^2]/(2x)=[(x^2+4xy+4y^2)-(x^2-y^2)-5y^2]/(2x)=[4xy]/(2x)=2y[(3x

(x+y)的平方-2x-2y-3=(x+y)的平方-2(x+y)-3=(x+y-3)(x+y+1)

y是多少原式=(x+y)(x-y)/(x-y)²+x(y+3)/x(y+3)=(x+y)/(x-y)+1=(x+y+x-y)/(x-y)=2x/(x-y)=1/(1/2-y)再问：y=3

2(y-x)²-7(x-y)+6(x-y)-3(y-x)²=-(y-x)²-(x-y)=-(x-y)²-(x-y)=-(x-y)[(x-y)+1]=(y-x)(

4/x-15x²y再问：朋友，发一下过程再答：3x²y-(-3x)²×(2y)+x³y²/(x²x²y²/4)=3x&#

（x+y）(x+2y)=x²+xy+2xy+2y²=x²+3xy+2y²

原式=9x⁴/16y²*2y/3x+x²/2y²*x/2y²=3x³/8y+x³/4y⁴=(3x³y

3a(x-y)-2(y-x)^2=3a(x-y)-2(x-y)^2=(x-y)[3a-2(x-y)]=(x-y)(3a-2x+2y)

3(x-y)²*(y-x)²*2(x-y)=6(x-y)^(2+2+1)=6(x-y)^5再问：需要再详细一点的过程再答：3(x-y)²*(y-x)²*2(x-

(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方=x²-2xy-3y²-x²+4y²-x²+2xy-y²=(x²-

解(x-y)(x+y)-(x-2y)²+x(3x-5y)-(x-y)(x-2y)=(x²-y²)-(x²-4xy+4y²)+(3x²-5xy

5x=3y,x=3y/5(2x+y)的平方=5x(x+y)+94x²+4xy+y²=5x²+5xy+9x²+xy-y²+9=09y²/25+

x8＋256y8-32x4y4(用手机打的不要介意,给个最佳答案吧）

∵4x²-y²+2x-y=(2x-y)(2x+y)+(2x-y)=(2x-y)(2x+y+1)∴4x²-y²+2x-y=(2x-y)(2x+y+1)不懂得欢迎追

原式=X²-9Y²-(X²-2XY-4Y²)-(4X²-4XY+Y²)=X²-9Y²-X²+2XY+4Y&su

1.(2x-3y)^2-(y+3x)(3x-y)=4x^2-12xy+9y^2-(3x+y)(3x-y)=4x^2-12xy+9y^2-9x^2+y^2=10y^2-5x^2-12xy2.[(x-y)

-2(x-y)^2-3(x-y)+5(y-x)^2+4(y-x)=-(x-y)(2x-2y+3)+(y-x)(5y-5x+4)=(y-x)(2x-2y+3)+(y-x)(5y-5x+4)=(y-x)(

x的平方-x-4y的平方+2y=(x-2y)(x+2y)-(x-2y)=(x-2y)(x+2y-1)

(x+2)^2-(y-3)^2=(x+y)*(x-y)x^2+4x+4-y^2+6y-9=x^2-y^24x+6y-5=0即为所求的方程

(3x-y)的平方-(2x+y)的平方-5(x-y)=(3x-y+2x+y)(3x-y-2x-y)-5(x-y)=5x(x-2y)-5(x-y)=5x^2-10xy-5x+5y