Question

(a + 1) × (a + 2) =
please answer correctly

Answer 1

Answer:

(a)²+(1+2)a+1×2

a²+a+2a+2

a²+3a+2

Answer 2

Answer:

(a+1) (a+2)

By using (x+a) (x+b )= x^2 + x (a+b  )+ ab

therefore,

a^2+ a (1+2) + 2*1

=a^2+ 3a +2