avarela0906 avarela0906
  • 15-09-2021
  • Mathematics
contestada

Find all complex solutions

4x^2-5x+2=0

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 18-09-2021

9514 1404 393

Answer:

   x = 5/8 ± i(√7)/8

Step-by-step explanation:

Comparing the given equation to the standard form for the quadratic, ...

  ax² +bx +c = 0

we see that we have a=4, b=-5, c=2. This lets us use the quadratic formula to find the solutions:

  [tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-(-5)\pm\sqrt{(-5)^2-4(4)(2)}}{2(4)}=\dfrac{5\pm\sqrt{-7}}{8}\\\\x=\left\{\dfrac{5}{8}-\dfrac{\sqrt{7}}{8}i,\dfrac{5}{8}+\dfrac{\sqrt{7}}{8}i\right\}[/tex]

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