2 years ago

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

Mathematics

2 answers:

umka2103 [35]2 years ago

7 0

Answer:

5400

Step-by-step explanation:

77x77=5929

23x23=529

5929-529

5400

stepan [7]2 years ago

4 0

Answer:

5400

Step-by-step explanation:

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