Math, asked by anujsing121212, 9 months ago

find the square of 84without actually calculation


Answers

Answered by EuphoricEpitome
3

Answer:

identity =

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

84 = (80+4)

(80+4)^2 =

(80)^2+(4)^2+2(80×4)

= 6400+16+640

= 7056

therefore (84)^2 = 7056.

Answered by Satyatejareddy
1

Answer:

8.2 might be your answer

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