12(x-0.5)化简
12(x-0.5)化简
化简:12(x-0.5)
(x+2)(x-12)+(x+7)(x+8)+(x+5)(x-10),化简.
化简:[√(x^2-6x+9)/x^2-x-12]*(x^3-16x)/(x^2-3x)-1/(x+3) {x>3}
化简:9x-12x+5x,3x-5x-2+5x+8,3x+5+2x+3-7-11x
化简:|x+11|+|x-12|+|x+13|.
X=0.5X-12+0.5[X-(0.5X-12)]+19 X=0.5X-12+0.5[X-(0.5X-12)]+19
12(X-0.5) 等于多少 化简
20%x+12=0.5x
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
1/(x^2+3x+2)+1/(x^2+5x+6)+1/(x^2+7x+12)+1/(x^2+9x+20) 化简,不是解
化简x^2-4x+4/2x-4 3x^2-9x-12/x^2+2x+1 x^2-7x+12/-x^2+9x-20 xy-