Quadratic equations
(Solve by Quadratic formula)

Question

Joe348 · Answer

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Sayyyy10 · Answer

just Evaluate the exponent, after that Multiply the numbers, after that Subtract the numbers then, and then Multiply the numbers...

Extrinix · Answer

The equation for a quadratic formula is:
$\sf{x = -b \pm\dfrac{\sqrt{b^2 -4ac}}{2a}}$

And the quadratic equation is:
$\sf{ax^2 + bx + c = 0}$

Using this, you can plug it in and solve for x. (You will get 2 equations, or NaN).
$\sf{x = -4 \pm\dfrac{\sqrt{4^2 -4(1)(8)}}{2(1)}}$

Simplify it:
$\sf{x = NaN}$

This means that the equation has no solutions, and the x-roots are non-existent

jhonyy9 · Answer

@extrinix wrote:

The equation for a quadratic formula is: $\sf{x = -b \pm\dfrac{\sqrt{b^2 -4ac}}{2a}}$ And the quadratic equation is: $\sf{ax^2 + bx + c = 0}$ Using this, you can plug it in and solve for x. (You will get 2 equations, or NaN). $\sf{x = -4 \pm\dfrac{\sqrt{4^2 -4(1)(8)}}{2(1)}}$ Simplify it: $\sf{x = NaN}$ This means that the equation has no solutions, and the x-roots are non-existent

- has no solutions - not is true - has no real solutions because the discriminant is les than zero

Extrinix · Answer

Thank you for the more in-depth response, Jhonyy ^.^

Joe348 · Answer

Thank you all. I get it now.

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