if a ^ 2 + b ^ 2 = 177 and ab = 54 then find the value of a + b / a - b ?
"( a + b ) ^ 2 = a ^ 2 + b ^ 2 + 2 ab = 117 + 2 * 24 = 225 a + b = 15 ( a - b ) ^ 2 = a ^ 2 + b ^ 2 - 2 ab = 117 - 2 * 54 a - b = 3 a + b / a - b = 15 / 3 = 5 answer is c ."
add(multiply(sqrt(177), const_10), const_3)