Mathematics: Solve the equation 2x²-x-8=0

Solve the equation 2x²-x-8=0 - id28014191640, littlequeenashley

DefineSilver3837

29.08.2021

$= x_{1} = \frac{1 - \sqrt{65} }{4} . x_{2} = \frac{1 + \sqrt{65} }{4}$

Step-by-step explanation:

$2x ^{2} - x - 8 = 0$

$x = \frac{ - ( - 1)± \sqrt{( - 1 {)}^{2} } - 4 \times 2 \times ( - 8)}{2 \times 2}$

$x = \frac{1± \sqrt{1 + 64} }{4}$

$x = \frac{1± \sqrt{65} }{4}$

$= x_{1} = \frac{1 - \sqrt{65} }{4} . x_{2} = \frac{1 + \sqrt{65} }{4}$

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yeinp9353

29.08.2021

$x=\frac{-1+-\sqrt{65}}{4}$

Step-by-step explanation:

Using the quadratic formula,

$x=\frac{-b+-\sqrt{b^{2}-4ac}}{2a}\\x=\frac{-1+-\sqrt{-1^{2}+64}}{4}\\x=\frac{1+-\sqrt{65}}{4}\\$

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mimiloveyuhh

20.01.2021

Of probability

Step-by-step explanation:

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