有理数乘法,7道1.25x(-1 /1/7)x(-3.2)x(-7/8) (-12)x(-1 1/7)x(-3.2)x(
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有理数乘法,7道
1.25x(-1 /1/7)x(-3.2)x(-7/8) (-12)x(-1 1/7)x(-3.2)x(-7/8)
(-2)x(-7)x(+5)x(-3/7) 5/31x(-2/9)x(-2 1/15)x(-4 1/2)
(-10)x(3/10-1/2+1/5-0.01)(-1/2+1/6-3/8+5/12)x(-24)
9 16/17x(-34) (-29 7/8)x8
1.25x(-1 /1/7)x(-3.2)x(-7/8) (-12)x(-1 1/7)x(-3.2)x(-7/8)
(-2)x(-7)x(+5)x(-3/7) 5/31x(-2/9)x(-2 1/15)x(-4 1/2)
(-10)x(3/10-1/2+1/5-0.01)(-1/2+1/6-3/8+5/12)x(-24)
9 16/17x(-34) (-29 7/8)x8
1.-4.5
2.43.2
3.-30
4.-1/3
5.0.1
6.7
7.-338
8.-239
2.43.2
3.-30
4.-1/3
5.0.1
6.7
7.-338
8.-239
有理数乘法,7道1.25x(-1 /1/7)x(-3.2)x(-7/8) (-12)x(-1 1/7)x(-3.2)x(
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
(3x^2+9x+7)/(x+1)-(2x^2-4x+3)/(x-1)-(x^3+x+1)/(x^2-1)是不是错了?
解方程 X除以(X-2) + (X-9)除以(X-7) = (X+1)除以(X-1) +(X-8)除以(X-6)
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
2x²+7x+1=0 x(x-1)=3x+7
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
(3x-2)(x+5)-7x(x的2次方-3x+1)
(3x²)³-7x³[x³-x(4x²+1)]