Useing identity evaluate 78x82
Answers
Answered by
6
Answer:
Step-by-step explanation:
78 × 82
=(80-2)(80+2)
=80^2-2^2
= 1600-4
= 1596
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Answered by
2
Answer: 6396
Step-by-step explanation:
78x82
=(80-2) x (80+2)
=80^2 - 2^2
=6400-4
=6396
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