Jika (lim x-> -3) x²+4x+3/x+3=a-1 nilai a adalah

jwab

lim(x-> -3) (x + 3)(x +1) / (x + 3) = 
limit(x -> - 3)  (x+ 1)  
x = - 3 ,limit = -3 +1 = - 2
a - 1 =  -2
a = - 1