Question

Select the two values of x that are roots of this equation.

Answer 1

Answer:

A and C

x = -(√17 - 5)/2, (√17 + 5)/2

Step-by-step explanation:

Quadratic Formula: $x = \frac{-b +/-\sqrt{b^2-4ac} }{2a}$

Step 1: Use quadratic formula

a = 1, b = -5, c = 2

$x = \frac{5 +/-\sqrt{(-5)^2-4(1)(2)} }{2(1)}$

$x = \frac{5 +/-\sqrt{25-8} }{2}$

$x = \frac{5 +/-\sqrt{17} }{2}$