(3x+2y)(2x+3y)-(4x-3y)(3x+4y) 等于多少?
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
(X-3Y)(X+3Y)-(X+2Y)(X-4Y)-(2X-Y)2的平方
x/4+2等于x,x=多少.y/5等于y-3,Y=多少
(3x+2y)(2x+3y)-(4x-3y)(3x+4y) 等于多少?
已知x+y+2(-x-y+1)=3(1-y-x)-4(y+x-1),则x+y等于( )
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
(3x-y)²-2x(4x-5y)-(x+2y)²
(x-y)(x-2y)-(3x-2y)(x-3y)
(3X+2Y)*(4X+5Y)*(3X-2Y)*(5Y-4X) 等于多少?
(x-y)的3次幂乘(x-y)的2次幂乘(y-x)等于?
|3x+5y-13|和(5x+3y-11)^2互为相反数,则x+y等于多少
已知x+3y=12,则(x平方+2xy - 3y平方)除以(x-y)等于多少