x²+(5-x)²=12怎么算
(-x+2x²+5)+(4x²-3-6x)怎么算?
x²+x=-6怎么算
x²-2x-x+2=0怎么算
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
(x²)²-3x²+1=0怎么算x在线等,
(x+4)²-18=3x(x+2)怎么算
(x+5)²-(x-2)(x-3) =x²+10x+25-(x²-5x+6) *5x怎么来
(x²-5x+6)(x²-12x+35)怎么解
x²+2x-6/x²+2x=1怎么算
3x/x²-1+x²-1/2x=5/2 怎么解
e^sin x(xcos x-(sin x/cos²x))的不定积分怎么算
(2x+1)²-(x+3)(3-x)=6x怎么简便算?