(5x+14)÷(x+2)=
=(5x+14)/(x+2)
最简形式,不要再算了[(x+2)²+2(x+2)(x-2)-3(x+2)(x-3)]÷(x+2)=?化简[(x+2)²+2(x+2)(x-2)-3(x+2)(x-3)]÷(x+2)=(x+2)+2(x-2)-3(x-3)=x+2+2x-4-3x+9=7