x^2-5x+33x^2+4xy-y^2(x^2-2x)^2-7(x^2-2x)+12x^2+x-(a^2-a)a/2-
x^2+x+a
x^2-5x+33x^2+4xy-y^2(x^2-2x)^2-7(x^2-2x)+12x^2+x-(a^2-a)a/2-
a*b=2×a+b 计算x*2x*3x*4x*5x*6x*7x*8x*9x=3039 x=
计算(1)x/x+y-x/x-y (2)a+2+4/a+2 (3)x^2-y^2/xy÷(x+y)
若多项式2x*x*x*x-3x*x*x+ax*x+7x+b能被x*x+x-2整除,求a:b
X+X×X=56 (X+2)-(X×X+7)=-45 X+a=105 X=?a=?
(xy-x^2)乘以(xy)/(x-y)
已知a(x*x+x-c)+b(2x*x-x-2)=7x*x+4x+3x.求a,b,c的值
(x^2+xy/x-y)/(xy/x-y)计算
因式分解(x-y)^2+4(x^2-y^2)+4(x+y)^2 a(x^2+2xy+y^2)-b(x^2-y^2) (x
1、x(x-y)(x+y)-x(x+y)^2
因式分解:4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3