Evaluate: (141)^2-(140)^2 - Vidyadip

Question

Evaluate:
$(141)^2-(140)^2$

✓

Answer

We have,

$(n+1)^2-n^2=(n+1)+n$

Taking $n=140$ and $(n+1)=141$

We get,

$(141)^2-(140)^2=(141+140)=281$

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