how to solve attached

Question

nickymail48 · Answer

attachment

anonymous · Answer

first move the 8 to the left side of the equation

anonymous · Answer

@10115658  you can't factor the 2 out from -x, it will become -1/2x

studygurl14 · Answer

Not quite. You can't factor out the 2 like that.

studygurl14 · Answer

You have to use the Quadratic formula

anonymous · Answer

ya my bad

anonymous · Answer

@nickymail48 here's a good visual for the Quad Formula http://www.teachingforexcellence.com/wp-content/uploads/2012/05/Math-Quadratic-Formula1.jpg

anonymous · Answer

yep quad formula works

nickymail48 · Answer

ok teacher didnt explain ir was quadratic

studygurl14 · Answer

$\Large 2x^2-x+8=0$

Quadratic formula:
$\Large ax^2+bx+c=0$
$\large x=\Large\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

anonymous · Answer

@nickymail48 What did you get for an answer?

jdoe0001 · Answer

$\bf 2x^2-x=-8\implies 2x^2-x+8=0
\ \quad \

\textit{quadratic formula}\
{\color{blue}{ 2}}x^2{\color{red}{ -1}}x{\color{green}{ +8}}=0
\qquad \qquad 
x= \cfrac{ - {\color{red}{ b}} \pm \sqrt { {\color{red}{ b}}^2 -4{\color{blue}{ a}}{\color{green}{ c}}}}{2{\color{blue}{ a}}}$

nickymail48 · Answer

thanks

nickymail48 · Answer

1+-3i sqrt 7/4

anonymous · Answer

Um, I think you may have typed it in wrong, but you might have it written down correctly. Do you have  $$1/4 \pm (3i \sqrt{7})/4$$
?

nickymail48 · Answer

yah ido i dont now how to write it like that

anonymous · Answer

Using the blue equation button below the text box to insert an equation. But it looks like you got it right!

nickymail48 · Answer

ok thanks!