(-5x-1/3y)(3/5x-3/4y+2).使用初一的方法解
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(-5x-1/3y)(3/5x-3/4y+2).使用初一的方法解
(-5x-1/3y)(3/5x-3/4y+2).使用初一的方法解
(-5x-1/3y)(3/5x-3/4y+2).使用初一的方法解
(-5x-1/3y)(3/5x-3/4y+2)
=-3x²-9/5xy+15/4xy+1/4y²-10x-2/3y
=-3x²-36/20xy+75/20xy+1/4y²-10x-2/3y
=-3x²+39/20xy+1/4y²-10x-2/3y
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+(x-3y)(x-5y)+(x-2y)(x-4y)
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
(5x-3y)(3y+5x)-(4y-3x)(3x-4y)
已知:3x-5y=0,求x/y,x-y/y,x-y/x
5/4(x+y)(-x-y)^3*[-4/3(x-y)]*[-3/5(y-x)^2]
(5x+3y)(3y-5x)-(4x-y)(4y+x)=
5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解
5x^3y(x-y)^3-10x^4y^3(y-x)^2
(3x-4y)(5x-4y)-(7x-8y)(6y-5x)
5X^3Y(X-Y)-10X^4Y^3(Y-X)^2因式分解
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
(x+y)^6/(x+y)^4-(x-y)^5/(x-y)^3 化简 ..
(2x-y)(3x-4y)-2(x-y)(2x-5y)简便运算
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5