whitneywoj08 whitneywoj08
  • 21-05-2020
  • Mathematics
contestada

PLZ HELP Select the two values of x that are roots of this equation . 2x ^ 2 + 1 = 5x

Respuesta :

Zaxoosh
Zaxoosh Zaxoosh
  • 21-05-2020

Answer:

2 and 5

Step-by-step explanation:

Answer Link
caelynserrao
caelynserrao caelynserrao
  • 21-05-2020

x=2.81 or x=0.219

Step-by-step explanation:

We are required to solve the equation;

Rearranging the equation;

2x² - 5x + 1 = 0

We can solve the equation using quadratic formula;

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

In this case;

a = 2, b = -5 and c=1

Therefore;

x=5+/-√{5^2-4(2)(1)} /{2(2)}

x={5+/-√17} }/4}

x= {5+√{17} }/{4} or x=5-√17} /4}

Answer Link

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