Using identities, evaluate 91²
Answers
Answered by
1
Answer:
(90 +1) whole square
simply apply identity now
Answered by
3
Answer:
(91)²
=(90+1)²
=90²+1²+2*90*1
=8100+1+180
=8281
Step-by-step explanation:
as (a+b)²
=a²+b²+2ab
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