Math, asked by vishwa2380, 11 months ago

(28)square using adentity​

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Answered by Anonymous
0

Answer:

Refer the attachment for the answer...

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Answered by Harishkhatri
1

Answer:

(28)2 is (30-2)2=30×30+2×2-2×30×2

=900+4-120

=784

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