计算:x^2+1/x-2-3-4x/2-x
问题描述:
计算:x^2+1/x-2-3-4x/2-x
答
x^2+1/x-2-3-4x/2-x
=(x²+1)/(x-2)+(3-4x)/(x-2)
=(x²+1+3-4x)/(x-2)
=(x²-4x+4)/(x-2)
=(x-2)²/(x-2)
=x-2