Question

calculate the square root of the difference of the squares of 25 and 20 and divide the result by (2 - 1/5)

Answer 1

(Square root ( 25^2 - 20^2) )/ 2-1/5
Square root (625 -400)/ ( 10-1/5)
Square root 225/(9/5)
15/1 x5/9 = 15x5/ 1x9 =75/9=8.333333333