4x+12 3x-24

4x+12 3x-24 15x=23x-24 12+5x=3x-8 3(x-3)=9-(x+6)解 4+x=4x-17解 (x-1)(x-2)(x-3)(x-4)-24 因式分解 (x+1)(x+2)(x+3)(x+4)-24因式分解 因式分解(x+1)(x+2)(x+3)(x+4)-24 (1+x)(2+x)(3+x)(4+x)+24 (x×x+3x+2)(x×x+7x+12)-24 4x + 4 - 24x = 24 - 3x + 12 求 x 的值 , 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 先化简再求值,(-4x^2)/(-2x)+12x^3y^2/(-4x^2y)-24x^4y^3/(-4x^3y^2),x 4(x-3)^2=25,(x-1)(x+3)=12,(x^2+x)(x^2+x-2)=24 若x=π/3,｜x+1|+|x+3|+...+|x+13|-|x+2|-|x+4|-...-|x+12|