Math, asked by arghalayak, 1 month ago

factorise 16x²+42by-9y²+40xa-49b²+25a²

Answers

Answered by caprogger99

0

Step-by-step explanation:

=16x²+25a²+40xa - (9y²+49b²-42by)

=16x²+25a²+2*4x*5a - (9y²+49b²-2*3y*7b)

=(4x+5a)² - (3y+7b)²

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