数学化简3x-x^2/5x+4 x 18/4x-12

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数学化简3x-x^2/5x+4 x 18/4x-12
(3x-x^2)/(5x+4) x 18/(4x-12)

(3x-x²)/(5x+4) × 18/(4x-12)
= [-x(x-3)]/(5x+4) × 18/[4(x-3)]
= [-18x(x-3)]/[4(5x+4)(x-3)]
= -9x/[2(5x+4)]
= -9x/(10x+8)

x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 数学分式化简计算x+[1/(x-1)]+[(x^2-3x+4)/(1-x^2)] 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 2x+3x+4x+5x+x+6x+7x=100 化简求值已知[x-(x/x+1)]*(x+1/x^2+3x+2)除以(x^2-2x/x^2-4),其中x=-1/2 数学2次根式化简[x^2-x-2+(x-1)sqrt(x^2-4)]/[x^2+x-2+(x+1)sqrt(x^2-4) x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少数学一题x+1分之x+2+x+7分之x+8=x+5分之x+6+x+3分之x+4