Question

factorise 9a²+42ab+49b²​

Answer 1

Answer:

3a^2+2×3a×7b+7b^2

(3a+7b)^2

hope it helps

pls mark the answer as the brainliest.

Answer 2

Answer:

9a^2+42ab+49b^2

Identity

a^2+2ab+b^2

(3a)^2+2*3a*7b+(7a)^2

(3a+7b)^2