Question

find the difference between 22^2 and 21^2 without subtracting​

Answer 1

Answer:

43

Step-by-step explanation:

22²-21²

= (22+21)(22-21)

=43

PLS MARK BRAINLIEST

Answer 2

Answer:

a^2 - b^2 = (a+b)(a-b)

This is an algebraic idetity

So, here a = 22, b = 21

a^2 - b^2 = 22^2 - 21^2

22^2 - 21^2 = (22+21)(22-21)

= 43*1 = 43