Question

数学题化简

x²-4x+4/2x-4 乘以（x+2），其中x=根号5

Answer 1

x²纯穗旅-4x+4/2x-4乘以（x+2）
=(x-2)²/族镇2(x-2) *（x+2）做凳
=(x-2)(x+2)/2
=(x²-4)/2
=(5-4)/2
=1/2

Answer 2

x²-4x+4/2x-4 乘以（x+2）改睁碧核举
=(x-2)²/2(x-2）乘以（x+2）
=(x-2)(x+2)/早物2
=(x²-4）/2
=（5-4）/2
=1/2