Question

please answer Question 9 fast, The person who answer fast I will mark his answer as the brainliest answer.( note- only give appropriate answer.)​

Answer 1

Answer:

1)196=(200-4)^2

=200^2-200*2*4+4^2

=40000-800+16

=39216

   

2)689^2=(690-1)^2

=690^2-690*2*1+1^2

=476100-1380+1

=474720