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I just need help with this pls

I just need help with this pls-example-1
User Gzc
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1 Answer

8 votes

Answer:

Option D

Explanation:

Hello!

Recall the quadratic equation:
x = (-b\pm√(b^2 - 4ac))/(2a)

Remember that a quadratic equation is written in the form
ax^2 + bx + c\\

So:

  • a = 2
  • b = 5
  • c = -1

Plug the values in and solve:


x = (-b\pm√(b^2 - 4ac))/(2a)\\\\x = (-5\pm√(5^2 - 4(2)(-1)))/(2(2))$\\\\x = $(-5\pm√(25 +8))/(2(2))$\\\\x = $(-5\pm√(33))/(4)

This would be
\boxed{\text{Option D}}

User Lakshmen
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