sum of the squares of 3 no . is 52 and the sum of their products taken two at a time is 72 . find the sum ?
"( a + b + c ) 2 = a 2 + b 2 + c 2 + 2 ( ab + bc + ca ) = 52 + 2 * 72 a + b + c = â ˆ š 196 = 14 answer e"
sqrt(add(52, multiply(72, const_2)))