Question

y=(x+2)²
постройте график​

Answer 1

$y = {x}^{2} + 4x + 4 \ {x}^{2} + 4x + 4 = 0 \ d = 16 - 16 = 0 \ x = frac{ - 4 + 0}{2} = - frac{4}{2} = - 2$