已知x减一等于根号三求代数式括号x加一括号的平方减四括号x加一括号加四的值

Question

如题所述

Answer 1

括号x加一括号的平方减四括号x加一括号加四
=(x-1)^2-4(x+1)+4
=(根号3)^2-4(x-1+2)+4
=3-4(根号3+2)+4
=3-4根号3-8+4
=-1-4根号3