Question

3x²=9
4x²=20
vr rezolvare pls​

Answer 1

Răspuns:

$3 {x}^{2} = 9 = > {x}^{2} = 3 = > \sqrt{ {x}^{2} } = \sqrt{3} = >s = ( - \sqrt{3} \: si \: \sqrt{3} )$

$4 {x}^{2} = 20 = > {x}^{2} = 5 = > \sqrt{ {x}^{2} } = \sqrt{5} = > \: s = ( \sqrt{5} \: si \: - \sqrt{5} )$