without actual multiplication evaluate the following.
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25^2 - 24^2
= ( 25 +24)(25-24)
[ a^2 - b^2 = (a+b) (a-b)]
= ( 49)(1)
= 49
= ( 25 +24)(25-24)
[ a^2 - b^2 = (a+b) (a-b)]
= ( 49)(1)
= 49
Answered by
8
hope it will help you
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