evaluate the following product without multiplying directly 1. 97x103
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Answered by
2
1 . 97 x 103
= ( 100 - 3 ) x ( 100 + 3 )
= using the identity which is ( x - y ) ( x + y ) = x² - y²
in this question x = 100 and y = 3
= 100² - 3²
= 10000 - 9
= 9991
Hence the answer is 9991
you can also verify this using a calculator
Answered by
2
Answer:
97×103
Step-by-step explanation:
(90+7)(100+3)
9000+270+700+21
=9,991
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