find the square of 84without actually calculation
Answers
Answered by
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
1
Answer:
8.2 might be your answer
Similar questions