Find using identities - 1.01 (9.9)
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(1.01)(9.9)
=(1+0.1)(1-0.1)
=(1)^2-(0.1)^2
=1-0.01
=0.99
=(1+0.1)(1-0.1)
=(1)^2-(0.1)^2
=1-0.01
=0.99
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