Math, asked by kritikatoshniwal9, 4 months ago

factorise : 7(3a - b)² - 28(2a - b)²



pls give step by step ​

Answers

Answered by KritikaBharti
2

Step-by-step explanation:

21a-7bsqr -56a-28b square

21a-56a-7b sqr -28b

-35a-21b sqr ans

Answered by golaprani1980
1

Step-by-step explanation:

21a-7bsqr-56a-28b square

21a-56a-7b sqr-28b

-35a-21b sqr answer.

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