evaluate using. identity
72*68
Answers
Answered by
6
Answer:
4896
Step-by-step explanation:
(70 + 2) * (70 - 2)
You must be aware of identity (a + b) * (a - b) = a² - b²
so,
from above,
= (70)² - (2)²
= 4900 - 4
= 4896
Answered by
3
Answer:
72×68
=7896
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