How to solve this?

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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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\[10a ^{2}-20a+8\] Do I need to use the general formula?
solve ? if you want to solve you need an equation (with =0) do you want to factor this ?
yep

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Other answers:

yes what ? factor or solve ?
solve
then yes, you'll need a quadratic formula
Compare your quadratic equation with \(ax^2+bx+c=0\) find \[a=...?\\b=...?\\c=...?\\\] \[ \\ \sqrt{b^2-4ac}=...?\] then the two roots of x are: \(\huge{x_{1,2}=\frac{-b \pm \sqrt{b^2-4ac}}{2a}}\)
\[\frac{ -20\pm4\sqrt{5} }{ 20 }\]
Am I correct until here?
b =-20 right ? so, -b =+20
Ok...and then?
yeah, then factor out the '4' from the numerator
Thanks! Got it!
welcome ^_^

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