identity 30.5×29.5 with out actual multiplication
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Answered by
20
30.5×29.5
=(30+0.5)×(30-0.5)
=(30)^2-(0.5)^2
=900-0.25
=899.75
=(30+0.5)×(30-0.5)
=(30)^2-(0.5)^2
=900-0.25
=899.75
Answered by
9
this is the right way
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