(-4-5)2=(-2x+3)(-2x+3)-2(2x+3)(-3x+5),
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(-4-5)2=(-2x+3)(-2x+3)-2(2x+3)(-3x+5),
![(-4-5)2=(-2x+3)(-2x+3)-2(2x+3)(-3x+5),](/uploads/image/z/5455572-60-2.jpg?t=%28-4-5%292%3D%28-2x%2B3%29%28-2x%2B3%29-2%282x%2B3%29%28-3x%2B5%29%2C)
81=4x²-12x+9+12x²-2x-30
16x²-14x-102=0
8x²-7x-51=0
∴x1=3 x2=-17/8
16x²-14x-102=0
8x²-7x-51=0
∴x1=3 x2=-17/8
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
2x+3x+4x+5x+x+6x+7x=100
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
4x²-{-3x²-[5x-x²-(2x²-x)]+4x},其中x=½
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)