x^3 +6x² +11x+6
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
X²-6x+9 x²-9 x+3
6x+(2x²-3x)-(x²-1)
求解3x²+11x+6=x+14
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)
求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1
帮x²-x-6/x-/x-3/x²-5x+6
(x-2)(x-3)+2(x+6)(x-5)-3(x²-7x+13)化简
约分 (X的平方+4x+3)(2x-x)^/(X^+X)(X^+X-6),
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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