(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