Question

A number is squared and the three is added to its square. the result is 228 what is the number

Answer 1

15

Explanation:

A number squared is n² and 3 added to it is n² + 3, thus

n² + 3 = 228 ( subtract 3 from both sides )

n² = 225 ( take the square root of both sides )

n =
`√(225)` = 15

The required number is 15