Math, asked by aditya871438, 10 months ago

(3a+7) (3a+7)
Use suitable identity to solve and please explain

Answers

Answered by sandeepmotipwar

2

Answer:

(3a+7)^2
3a^2+42a+49

Answered by nethragayathri26

5

Answer:

Maybe this will help you

Step-by-step explanation:

(3a+7) (3a+7)

(3a+7)²

when we multiply both we will get 9a² and 49

to use identity we can use (a+b)²

(a+b)² = a² + b² + 2ab

(3a+7)² = 3a² + 7² +2(3a)(7)

= 9a² + 49 + 42a

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