Question

1) DATE:
2
(269+831)²+(269-831)^2/
(2.69 )^2 + (8.31) ^2​

Answer 1

use two type of formulae, (a+b)² and (a-b)², change only Denominator( भाजक) as per formula.

step 2:- cancel out the same numbers

step 3:- change decimal into fraction and take 2 common, DO REMEMBER WE WILL PUT 269 IN SQUARE AND ALSO 831 Seperately AS SHOWN.

..

STEP 4:- At last take 10,000 to denominator and cancel out the left one, and here we have the answer 20,000