Question

rezolvati in R urmatoareele ecuatii:

x²= 0,8

Answer 1

$x^2=0,8 \\ \Rightarrow x=\sqrt{0,8}\approx0,89 \\ S=\{\approx0,89\}$

Answer 2

$x^{2} = 0,8 =\ \textgreater \ x = \sqrt{0,8} =\ \textgreater \ x =0 , 2 \sqrt{2}$