Question

descompuneti in factori expresia:5-9y patrat

Answer 1

 [/tex][tex]( \sqrt{5} - 3y)*( \sqrt{5} +3y) verificare: = (\sqrt{5} )*( \sqrt{5}) -3y( \sqrt{5)} +3y( \sqrt{5} )[/tex]$-9 y^{2} = 5 - 9 y^{2}$