Odpowiedź :
n kwadrat+(n+1)kwadrat+(n+2)kwadrat=149
3nkwadrat=6n-144
delta36+1728=1764
n1=-6-42:6=-8
n2-6+42:2=6
n=6
n+1=7
n+2=8
3nkwadrat=6n-144
delta36+1728=1764
n1=-6-42:6=-8
n2-6+42:2=6
n=6
n+1=7
n+2=8