1397 x 1397 = ? Options: A . &nbsp1951609 B . &nbsp1981709 C . &nbsp18362619 D . &nbsp2031719

Answer: Option A 1397 x 1397 = (1397) 2 = (1400 - 3) 2 = (1400) 2 + (3) 2 - (2 x 1400 x 3) = 1960000 + 9 - 8400 = 1960009 - 8400 = 1951609.

1397 x 1397 = ?

Question

1397 x 1397 = ?

Options:

A . 1951609

B . 1981709

C . 18362619

D . 2031719

Answer: Option A

1397 x 1397 = (1397)²

= (1400 - 3)²

= (1400)² + (3)² - (2 x 1400 x 3)

= 1960000 + 9 - 8400

= 1960009 - 8400

= 1951609.

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