Question

Gente alguem sabe resolver esse pitsgoras?

Answer 1

x²=1² + (√5 - x)²
x²=1 + 5 - x²
2x²=6
x²=6
     2
x²=3
x=√3 

Answer 2

$x^2=1^2+( \sqrt{5}-x)^2 \\ \\ x^2=1^2+5-2x \sqrt{5}+x^2 \\ \\ x^2-1-5+2x \sqrt{5}-x^2=0 \\ \\ -6+2x \sqrt{5}=0 \\ \\ 2x \sqrt{5}=6 \\ \\ x = \frac{6}{2 \sqrt{5} } =\frac{3}{ \sqrt{5} }= \frac{3 \sqrt{5} }{5}$

=)