(2x-6)/(x²-4x)/(X+3)*( x²+x-6)/(3-x)等于多少?
(2x-6)/(x²-4x)/(X+3)*( x²+x-6)/(3-x)等于多少?
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
2x^6×x³-3x^9+5x²×x^7等于多少
(-x+2x²+5)+(4x²-3-6x)等于多少
x²+3x=6,问x等于多少
2x²+3x+7=12, 4X²+6X-1=?说明X等于多少
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
(-x)1(-x)2(-x)3(-x^4)等于多少
(x+1)(x+2)(x+3)(x+4)等于多少
lim(x→∞)(根号4x²-3x+2)/2x等于多少?
-x(x²-x)等于多少?