(-3x²)×(4x²-x)=
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(-3x²)×(4x²-x)=
还有一道类似题:(6a²b-9a³)÷(3a)²
还有一道类似题:(6a²b-9a³)÷(3a)²
![(-3x²)×(4x²-x)=](/uploads/image/z/17698973-5-3.jpg?t=%28-3x%26%23178%3B%29%C3%97%284x%26%23178%3B-x%29%3D)
(-3x²)×(4x²-x)=-12x⁴+3x³
(6a²b-9a³)÷(3a)²
=(6a²b-9a³)÷9a²
=2b/3-a
(6a²b-9a³)÷(3a)²
=(6a²b-9a³)÷9a²
=2b/3-a
4x²-{-3x²-[5x-x²-(2x²-x)]+4x},其中x=½
已知f(x)={x²-3x+4(x>0),{1-x(x
3x⁷*x⁴+2x*x²*x⁴-4x⁵*(-x)²
解方程:x(6-x)-2x(x+1)-(x^3-3x^4)/x²=4
先化简,再求值(3x/x-2+x/x+2)/(x/x²-4),其中x=-3
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
2X²-X=6,4X²-3X-1=X-2,3X(X-3)=2(X-1)(X+1),
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
2f(x)+x^2f(1/x)=(3x³-x²+4x+3)/(x+1) 2x²f(1/x)
3x²-{7x-(4x-3)-2x²=?注:x=未知数.
解方程 (3x+1)(3x-1)=(x+2)(9x-4) 2(x-3)(x-2)-(x+3)²=(x-1)(x
X²-X-1=0则X³+X²-3X+4=