30-3(3-X)=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 1
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30-3(3-X)=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 100-X=3(20+X)
30-3(3-X)=4X
30-9+3x=4x
21=x
x=21
3X+12*6=15X+12
72-12=15x-3x
12x=60
x=5
4X-2(50-X)=20
4x-100+2x=20
6x=120
x=20
12(X-13)=10(X+3)
12x-156=10x+30
2x=186
x=93
100-X=3(20+X)
100-x=60+3x
40=4x
x=10
再问: 0.5(X-1.2)=1.5X=1
30-9+3x=4x
21=x
x=21
3X+12*6=15X+12
72-12=15x-3x
12x=60
x=5
4X-2(50-X)=20
4x-100+2x=20
6x=120
x=20
12(X-13)=10(X+3)
12x-156=10x+30
2x=186
x=93
100-X=3(20+X)
100-x=60+3x
40=4x
x=10
再问: 0.5(X-1.2)=1.5X=1
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
4(x+3)=2x+2 7(x-1)=2x+3 4x+20=6x-30 4x-12=2x 2x-3=x+7 3x-4=2
若x=π/3,|x+1|+|x+3|+...+|x+13|-|x+2|-|x+4|-...-|x+12|
30-3(3-X)=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 1
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),
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如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
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