Question

Using properties of squares, find the value of 22²- 21².

Plz guys answer me right now because it's very urgent. ​

Answer 1

Answer:

answer for the given problem is given

Answer 2

Answer:

=43

Step-by-step explanation:

(first factor the expression)

(22-21)×(22+21)

1×(22+21)

1×(43)

=43