Find the HCF of x² – 9, x²+7x+12, 3x+9 Question Find the HCF of x² – 9, x²+7x+12, 3x+9 in progress 0 Math Amara 4 days 2021-10-11T04:00:30+00:00 2021-10-11T04:00:30+00:00 1 Answer 0 views 0

## Answers ( )

Answer: mark me as brainliestStep-by-step explanation:Factorizing x2 + 4x + 4 by using the identities (a + b)2, we get

(x)2 + 2(x)(2) + (2)2

= (x + 2)2

= (x + 2) (x + 2)

Also, factorizing x2 – 4, we get

(x)2 – (2)2, by using the identities of a2 – b2.

= (x + 2) (x – 2)

Therefore, H.C.F. of x2 + 4x + 4 and x2 – 4 is (x + 2).