the product of two numbers is 168 and the sum of their squares is 289 . the sum of the number is ?
"let the numbers be x and y . then , xy = 168 and x 2 + y 2 = 289 . ( x + y ) 2 = x 2 + y 2 + 2 xy = 289 + ( 2 x 168 ) = 625 x + y = 25 . option b"
sqrt(add(power(sqrt(subtract(289, multiply(const_2, 168))), const_2), multiply(const_4, 168)))