Question

(√28² - 21²) Solve this question with working. Also can someone explain how you do it.

Answer 1

Answer:

-413

Step-by-step explanation:

$\sqrt{28} ^{2} - 21^{2}\\ => 28 - 21^{2}\\ => 28 - 441\\=> -413$

Answer 2

Answer:

Ans Is 7√7

Step-by-step explanation:

Hope It Helps You