(x²+3x+3)(x²+3x-7)+25
(x-2)(x-3)+2(x+6)(x-5)-3(x²-7x+13)化简
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
3x⁷*x⁴+2x*x²*x⁴-4x⁵*(-x)²
计算: (x+3)(x²-x-2)
3x³-2x*x²
计算 (x+3)(x²-x-2)
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
X²-6x+9 x²-9 x+3
-(x²-2x)+(-3x+2x²)化简!
6x+(2x²-3x)-(x²-1)
3-2x²+3x+3x²-5x-2x²-7