Gimana??????????????

Kelas 11 Matematika
Bab Limit

lim (x² + 4x + 3)/(x + 3) = a - 1
x→ -3

= lim ((x + 1) (x + 3))/(x + 3) = a - 1
...x→ -3

-3 + 1 = a - 1
a = -2 + 1
a = -1