Question

17.
(98.7)2 – (1.3)2 =
9900
(C) 974
(A)
(B)
(D)
9740
97400​

Answer 1

98.7×2=197.4

1.3×2=2.6

197.4-2.6=194.8

Answer 2

Answer:

17. (98.7)²-(1.3)²=?

(98.7)²=9741.69.

(1.3)²=1.69.

(98.7)²-(1.3)²=9741.69-1.69.

=9740.

So, 9740 is your answer.