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Without the use of a calculator, calculate 77^2−23^2.
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2 votes
Without the use of a calculator, calculate 77^2−23^2.

User Hahaha
by
6.3k points

2 Answers

4 votes

Answer:

5400

Explanation:

User Rob Myrick
by
5.8k points
3 votes

Answer:

5400

Explanation:

77x77=5929

23x23=529

5929-529

5400

User Andreas Gohr
by
5.8k points
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