PLEASE HELP I AM GIVING 15 POINTS INSTEAD OF FIVE FOR ANSWERING PLEASSSEEE HEEEEELLLP

Mathematics

1 answer:

mr_godi [17]3 years ago

5 0

Answer:

Third Choice:

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Step-by-step explanation:

One line has

$x + \dfrac{b}{2a} = \pm \dfrac{\sqrt{b^2 - 4ac}}{2a}$

The next line's reason is that b/2a was subtracted from both sides.

The missing line is:

$x = -\dfrac{b}{2a} \pm \dfrac{\sqrt{b^2 - 4ac}}{2a}$

Then it simplifies to

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

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