8.9 into 9.1 use suitable identity
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2
Answer:
I sent you answer with pic
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Answered by
0
Answer:
80.99
Step-by-step explanation:
9.1=9+0.1
8.9=9-0.1
9.1×8.9=(9+0.1)( 9-0.1)
=(9)²-(0.1)²
=81-0.01
=80.99
I hope this will help you.......
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