Math, asked by akshita06092005, 10 months ago

Evaluate by using suitable identity (a+b-4) (a+b+4)

Answers

Answered by karannnn43

1

[ (a+b) -4 ] [ (a+b) +4 ]

= (a+b)² - (4)² ; { using identity (x-y)(x+y) = x²-y² }

= a²+b²+2ab-16

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