Math, asked by charsingh, 1 year ago

value and identity of 1999×1999. please say fast

Answers

Answered by saranyamjs

1

Answer:3996001

Step-by-step explanation:

1999×1999=(2000_1)^2

=(2000)^2+1^2_2×2000×1

=4000000+1_4000

=3996001

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