Question

When a number is multiplied by itself and 2 is added to it, the result is 227. What is the number?​

Answer 1

Let number be x

`\leadsto \sf {x}^(2) + 2 = 227`

`\\ \\`

`\leadsto \sf {x}^(2) = 227 - 2`

`\\ \\`

`\leadsto \sf {x}^(2) = 225`

`\\ \\`

`\leadsto \sf {x} = √(225)`

`\\ \\`

`\leadsto \sf {x} = √(15 * 15)`

`\\ \\`

`\leadsto \sf {x} = 15`

Number = 15