3x²-2x+5-6x²+3x-9

已知(x-2)(x²-6x-9)=x(x-5)(x-3),求6x的算术平方根 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| x²+3x+9/(x²-27)+6x/(9x-x²)-(x-1)/(6+2x) (2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3) 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)(x-3)+2(x+6)(x-5)-3(x²-7x+13)化简 2x^6×x³-3x^9+5x²×x^7等于多少 (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 计算[(x²-5x+6)/(x²-4x+3)]+[(x²-4x+3)/(x²-2 分式计算x²+2x／x²-6x+9÷x²-4／x²-3x x²＋2x/x²-6x+9÷x²-4/x²-3x , 分式计算：x²+2x／x²-6x+9÷x²-4／x²-3x