Math, asked by namitbhardwaj112, 21 days ago

answer this maths question step by step

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Answered by pbhagirath1954

0

Answer:

= 13² - {2√(42)}² (a+b)(a-b) = a²-b²

= 169 - 4*42

= 169 - 168

= 1

plz mark as the brainliest

Answered by amanamity

0

Answer:

Here watch it .... And try to remember identity

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