Question

y=(x+2)²
постройте график​

Answer 1

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