Using identities evaluate 77×83
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Answered by
15
Answer:
Here is your answer....
Step-by-step explanation:
(80-3)×(80+3)
(80) Square - (3) Square. (A2 -b2)
6400-9
=6391....
Hence, 77×83 = 6371.....
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Answered by
1
6371
Step-by-step explanation:
(80-3)×(80+3)
(80)^2-(3)^2. 【a^2-b^2】
6400-9
=6371.
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