Question

cu cat este egal a dacaa: a^2+8a=240

Answer 1

Ecuatie de gradul 2:
$a^{2} +8a-240=0$

=> Δ = 64+4*240=64+960=1024
radical din Δ = 32
[tex] a_{1} = \frac{-8+32}{2} = \frac{24}{2} =12 \\\\ a_{2} = \frac{-8-32}{2} = \frac{-40}{2} =-20[/tex]

Deci cele 2 raspunsuri sunt: 12 si -20