Question

find the roots of the following quadratic equation by applying the quadratic formula
2x^{2} + x + 4=0

Answer 1

Hi friend here is your answer.

We knew that, formula of quadratic

$x = \frac{ \ - b \frac{ + }{ } \sqrt{ {b}^{2} - 4 ac} }{2a } \\ so.. \\ a = 2 .\: \: \: \: b = 1 \: \: \: \: \: c = 4 \\ fill \: the \: amounts \: in \: formula.. \\ x = \frac{ - 1 \frac{ + }{} \sqrt{ {1}^{2} - 4 \times 2 \times 4} }{2 \times 2} \\ x = \frac{ - 1\frac{ + }{} \sqrt{1 - 32} }{4} \\ x = \frac{ - 1 \frac{ + }{} \sqrt{31} }{4}$

Hope my answer will help you.

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