What does 1397 x 1397 equal?
A. 1951609
B. 1981709
C. 18362619
D. 2031719
Answer:A
What does 1397 x 1397 equal?
A. 1951609 B. 1981709 C. 18362619 D. 2031719
Explanation: 1397 x 1397 x 1397 x 1397 x 1397 x 13 (1397)= SQUARE (1400 - 3),SQUARE = (1400)SQUARE + (3)SQUARE - (2 x 1400 x 3) = 1960000 + 9 - 8400 = 1960009 - 8400 = 1951609. SQUARE = (1400)SQUARE + (3)SQUARE - (2 x 1400 x 3) = 1960000 + 9 - 8400 = 1960009 - 8400 = 1951609.