16x^2+24x^2+9
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
化简:[√(x^2-6x+9)/x^2-x-12]*(x^3-16x)/(x^2-3x)-1/(x+3) {x>3}
|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?
(x^2+4x+16)(x^2+9x+16)-6x^2 求因式分解,
(x+2/x^2-x-6)-(2x/x^2-3x)-(x+1/x^2-6x+9)
计算:(x+2)/(x^2 - x - 6) + 2x/(x^2 - 3x) - x/(x^2 - 6x + 9)
x+2/x^2-x-6 + 2x/x^3-3x - x+1/x^2-6x+9
解方程:2x(x-9x)+16=0
x^4-6x^3+9x^2-16 因式分解
13x-5x(2x-3.3)=24 16-5x(x+1.2)=2x-4 方程解
(9-6x+x^2/x^2-16)/(x-3/4-x)*(x^2+4x+4/4-x^2)分式的混合运算