Math, asked by saurabh4295, 8 months ago

Hi guys I have a task for you today >>Task : I have a question for you the one answers first and correct . Will have the chance of being the brainiest today...
>>Question :
The value of [3a+7b]^2-[3a-7b]^2 is

Answers

Answered by aanya2008sharma

0

Answer:

84ab

Step-by-step explanation:

[3a+7b]²-[3a-7b]²

use identity a²-b²=(a+b)(a-b)

[3a+7b+3a-7b] [3a+7b-3a+7b]

(6a)(14b)

84ab

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