Teacher asked a question to the students in the class: Find the difference of squares of 55 and 45. Abhinav used an identity and solved the question immediately
a) Which identity did Abhinav use?
b) Solve the above question using the identity?
c) What Value should student learn from
Abhinav?
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Answer:
@the identify Abhinav used was (a+b)× (a-b)
b)a=55 b=45 (55+45) ×(55-45)
=100×10
=1000
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