Question

Represents a coefficient from the expression given? 9x – 20 + x2

Answer 1

`(x - ( - 9 + √(161) )/(2) )(x - ( - 9 - √(161) )/(2) )`

Explanation:

`1. \: a(x - \frac{ - b + \sqrt{ {b}^(2) - 4ac} }{2a} ) \: (x - \frac{ - b - \sqrt{ {b}^(2) - 4ac} }{2a}) \\ 2. \: (x - \frac{ - 9 + \sqrt{ {9}^(2) - 4 * - 20 } }{2} ) \: (x - \frac{ - 9 - \sqrt{ {9}^(2) - 4 * - 20 } }{2} )`