Question

u can say....................​

Answer 1

1. lim(x->a) ( x - a) (x +a)/(x-a)

Lim (x -> a) ( x + a)

=> a + a = 2a

2. lim( x -> 5) 2x^2 + 4x +x + 2

lim( x -> 5) 2x ( x +2) +1( x+2)

lim( x -> 5) ( x+2) ( x+1)

=> (5 +2) ( 5 +1)

=> 7 × 6 = 42