Using a^2 - b^2=(a+b) (a-b) ,find 51^2 -49^2
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Answered by
49
(51)^2-49(2)^2
= (51-49)(51+49)
= 2(100)=
= 200
= (51-49)(51+49)
= 2(100)=
= 200
mansi2002:
(51+49)(51-49). = 100×2=200
Answered by
20
your answer is given.
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