先化简x-2/x^2-1乘以x^2+2x+1/x^2-x-2,然后选择一个你喜欢的x值,计算该代数式的值.

2x乘以x乘以x=24,求x! x乘以x+1乘以x+2乘以x+3=3024怎么解? x-1乘以x-2分之1,+x-2乘以x-3分之1,+x-3乘以x-4分之1,+.+x-99乘以x-100分之 化简0.5x乘以x乘以y乘以x-y乘以x乘以x^2+0.5x乘以x乘以y 1x乘以2x等于几x 先化简,再求值.x/x+1-x+3/x+1乘以2x^2+6x/x^2+6x+9,其中x=-1/2 化简：x^2-1分之x乘以x^2分之x^2+x x-6/(4-4x+x^2)除以(x+3)乘以1/3-x 2X乘以X等于多少 2x乘以x平方等于多少? (x-2)²乘以x等于多少 2x乘以x的4次方 x乘以根号下x-2不定积分 x-120=2乘以(x-200) x加1乘以x加2乘以x加3乘以x加4减8等于0 怎么解,x乘以（x+1）乘以（x+2）乘以（x+3）＝360 计算 x²-1/x²-4x+4 除以（x-1）乘以x-2/x²+x （x+3）的平方加（x-1）乘以（x+2）减2x乘以（x-5）