Question

2x square -2x -24= 0​

Answer 1

Answer

2xsquare-x-2=0 by formula method

Step-by-step explanation:

2 {x}^{2} - x - 2 = 02x2−x−2=0

x = \frac{ - b + - \sqrt{ {b}^{2} - 4ac } }{2a}x=2a−b+−b2−4ac

x = \frac{1 + - \sqrt{ {( - 1)}^{2} - 4(2)( - 2) } }{2(2)}x=2(2)1+−(−1)2−4(2)(−2)

x = \frac{1 + - \sqrt{1 + 16} }{4}x=41+−1+16

x = \frac{1 + - \sqrt{17} }{4}x=41+−17

x = \frac{1 + \sqrt{17} }{4} \: or \: x = \frac{1 - \sqrt{17} }{4}x=41+17orx=41−17