Найдите числа х и у, удовлетворяющие равенству : x^{2} + 5 y^{2} + 4xy + 2y + 1 = 0
I hope this helps you
А можно чуть-чуть подробнее, начиная со второй строки?
you have to do perfect square for this equation
Oh, I see, okay, thanks
if this perfect squares sum are equal zero each perfect square equal zero
only imaginer numbers squares are negative
sorry, but you made a mistake, there is not 4y ^ 2, but 5 y ^ 2
no it's correct
there are two perfect square
4y^2+y^2=5y^2
I could, thanks again