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galben [10]
3 years ago
8

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

Mathematics
2 answers:
umka2103 [35]3 years ago
7 0

Answer:

5400

Step-by-step explanation:

77x77=5929

23x23=529

5929-529

5400

stepan [7]3 years ago
4 0

Answer:

5400

Step-by-step explanation:

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