Question

几个初二题目

(1-√3)(1+√3)
(1-√3)^2
(1+√3)^2
(x-1)^3=0.5

Answer 1

(1-√3)(1+√3)
=1^2-(√3)^2
=1-3
=-2

(1-√3)^2
=1^2-2√3+(√3)^2
=1-2√3+3
=4-2√闭知3

(1+√3)^2
=1^2+2√3+(√3)^2
=1+2√3+3
=4+2√3

(x-1)^3=0.5
(x-1)^3=1/2
x-1=(1/伏则2)开三轿厅消次方
x-1=(4/8)开三次方
x-1=4开三次方/2
x=1+(4开三次方/2)