30-second oral question

The expression 9(2018^2)+20180+4040 is a square of what positive integer?

2 answers

9(2018^2) + 20180 + 4040
= (3*2018)^2 + 10(2018) + 2(2018) + 4
= (3*2018)^2 + 12(2018) + 2^2
= (3*2018)^2 + 2*(3*2018)*2 + 2^2

Using a^2 + b^2 + 2ab = (a+b)^2, this is equal to:

= (3*2018 + 2)^2
= (6056)^2
Arora, nicely done, impressive!
Similar Questions
    1. answers icon 4 answers
    1. answers icon 1 answer
  1. Integer Subtraction Quick Check5 of 55 of 5 Items Question Which of the following is true when you subtract integers?(1 point)
    1. answers icon 1 answer
  2. Which of the following is true when you subtract integers?(1 point)Responses A positive integer minus a positive integer will
    1. answers icon 1 answer
more similar questions