Question
Evaluate:
$(75)^2-(74)^2$
$(75)^2-(74)^2$
✓
Answer
We have,
$(n+1)^2-n^2=(n+1)+n$
Taking $n =74$ and $( n +1)=75$
We get,
$(75)^2-(74)^2=(75+74)=149$
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