4+12(x-y)+9(x-y)^2你能写一写过程么?
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4+12(x-y)+9(x-y)^2你能写一写过程么?4+12(x-y)+9(x-y)^2你能写一写过程么?4+12(x-y)+9(x-y)^2你能写一写过程么?原式=[2+3(x-y)]^2=(2+
4+12(x-y)+9(x-y)^2你能写一写过程么?
4+12(x-y)+9(x-y)^2你能写一写过程么?
4+12(x-y)+9(x-y)^2你能写一写过程么?
原式=[2+3(x-y)]^2=(2+3x-3y)^2
4+12(x-y)+9(x-y)2
=22+2×2×3(x-y)+[3(x-y)]2
=[2+3(x-y)]2
=(2+3x-3y)2;
4+12(x-y)+9(x-y)^2你能写一写过程么?
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
4-12(x-y)+9(x-y)^2 因式分解
4(x+y)^2-12(x+y)+9因式分解
4(x+y)^2-12(x+y)+9
已知x,y为正整数,且4x^2-9y^2=31,你能求出x,y的值吗
4(x+y)^2-12(x+y)(x-y)+9(+y)^2因式分解,
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值解方程组6x+y-z=0,3x-y+z=5,y+2z=4求x,y,z的值 真的实在解不出来,希望你能帮帮忙!
已知,x,y为正整数,且4x方-9y方=31,你能求出x,
4+12(x-y)+9(x-y)^
9(x-y)-12(y-x)^2
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已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
(1).x^2-xy+x (2).m^2n-mn^2+mn (3).9x^3y^3-21x^3y^2+12x^2y^2 (4).x^2(x-y)+y^2(x-y)多项式因式分解
x(x-1)-(x^2-y)=-3 x^2-x-x^2+y=-3 -x+y=-3 x-y=3 你能告诉我为什么这个-x+y=-3会变成x-y=3吗?
已知x,y为正整数,且4x²-9x²=31,你能求出x,试一试.内个,打错了,已知x,y为正整数,且4x²-9x²=31,你能求出x,试一试。应该是已知x,y为正整数,且4x²-9y²=31,你能求出x,试一试
4+12(x-y)+9(x-y)
4-12(x-y)+9(x-y)^2因式分解