Question

The value of (2021+2020−1)(2021+2020+1)=

Answer 1

Answer:

know 5x5 = 25 and 6x6 = 36, so the square root of 30 is somewhere between 5 and 6. We'll start out by guessing 5.5.

Read more at: https://www.ducksters.com/kidsmath/square_and_square_root.php

This text is Copyright © Ducksters. Do not use without permission.

Answer 2

Answer:

16329680 is right answer