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Find the squares of the number127...

Find the squares of the number127

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(1)Square of `127` is `(120+7)^2=(127)^2`
using identity `(a+b)^2=a^2+b^2+2ab`we have,
`=(120)^2+(7)^2+2xx120xx7`
`=14400+49+1680`
`=16129`
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