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,
$(75)^2- (74)^2= (75 + 74) = 149$
$(n + 1)^2- n^2= (n + 1) + n$
Taking $n = 74$ and $(n + 1) = 75$
We get,
$(75)^2- (74)^2= (75 + 74) = 149$
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