Question

:solve using formula method 2 X square + X - 5 is equal to zero ​

Answer 1

Answer:

comparing with ax²+bx+c=0

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

Step-by-step explanation:

$x = \frac{ - b + or - \sqrt{ {b}^{2} - 4ac } }{2a}$

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

$x = \frac{ - 1 + or - \sqrt{41} }{4}$

Taking +ve. Taking -ve.

x=(-1+√41)/4. x=(-1-√41)/4.