Question

x+101=2分之根号5-1乘x+166

Answer 1

x+101=[(√5-1)/2](x+166) 对吗?

2( x+101)=(√5-1)(x+166)

2x+202=(√5-1)x+166(√5-1)

2x-(√5-1)x=166(√5-1)-202

(2-√5+1)x=166√5-166-202

(3-√5)x=166√5-368

x=(166√5-368)/(3-√5)

=(166√5-368)(3+√5)/(9-5)

=(166√5-368)(3+√5)/4

=(83√5-184)(3+√5)/2

=(249√5-552+415-184√5)/2

=(65√5-137)/2

=4.1722092687431651332981442337665