Evaluate [(405)²-(395)²]
Answers
Answered by
4
Answer:
(405+395)(405-395)
=800×10=8000.
Step-by-step explanation:
Answered by
6
Answer:
8000
Step-by-step explanation:
(405)² - (395)²
use formula a² - b² = (a+b) (a-b)
So (405)²- (395)²
= ( 405 + 395 ) (405 - 395)
= ( 800) ( 10 )
8000
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