find the value of 77×83 by using formula
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Answered by
13
77×83= (80-3)×(80+3)
now (a-b)(a+b)=
therefore the answer is 80^2-3^2
6400-9=6391
now (a-b)(a+b)=
therefore the answer is 80^2-3^2
6400-9=6391
Answered by
4
Answer: The value of 77 x 83 is 6391
Step-by-step explanation:
We know that 77 x 83 can be written as (80-3)x(80+3)
Now as we know the algebraic property is
By using the mentioned property we get
Hence, the value of 77 x 83 is 6391
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