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