7X+9=7*5/8*X+8*3/8*X得多少?
5x+7x-7x+5x=10.x得多少
5X-3=7X+2 移项后得多少?
-x+(2x-2)-(3x+5)得多少?
(3x-1)/0.5=(4-x)/0.3+(3x+5)/1.5 x得多少?
(7x —3y)—(10y—5x)得多少?
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2^+x^=(2倍根号3-x)^得多少
2X/x²-64y² 减去1/X-8y得多少,.解析.
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
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+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)