Question

m²+ 24m + 144 при m = -19.​

Answer 1

Ответ:

-19²+24*(-19)+144=361-456+144=49

Answer 2

$m^{2}+24m+144=m^{2}+2*12*m+12^{2}=(m+12)^{2}\\\\m=-19 \ , \ \Rightarrow \ (m+12)^{2}=(-19+12)^{2}=(-7)^{2} =\boxed{49}$