Question

solve by applying quadratic formula 2X^2+x+4=0​

Answer 1

Step-by-step explanation:

QUESTIONS:-

solve by applying quadratic formula

$2 {x}^{2} + x + 4 = 0$

solution:-

$2 {x}^{2} + x + 4 = 0$

using quadratic formula

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

now :- a=2 , b=1 and c=4

put the value on formula

$x = \frac{ - 1 \pm \sqrt{ {1}^{2} - 4 \times 2 \times 4 } }{2 \times 2} \\ x = \frac{ - 1 \pm \sqrt{1 - 32} }{4} \\ x = \frac{ - 1 \ + \sqrt{31} }{4} \: and \: x = \frac{ - 1 - \sqrt{31} }{4}$