Question

If eleven is added to the square of a number, the results is sixty. find all such numbers

Answer 1

x^2 + 11 = 60 {11 is added to the square of a number to get 60}  

x^2 = 49 {subtracted 11 from both sides}

x = 7 or -7 {took square root of both sides}  

the numbers are 7 and -7