Question

rezolvati ecuatia
√5-x²=1

Answer 1

x^2 = rad5 -1
x1,2 = +/- rad(rad5 - 1) ≈  +/- rad(2,236-1) = +/- rad1,236 ≈ +/- 1,112 aproximat la miimi.

Answer 2

$\sqrt{5-x^2} =1 \\ \\ 5-x^2=1 \\ \\ -x^2=1-5 \\ \\ x^2=4 \\ \\ x=2;-2$