The equation is .
Take out common factor.
\Apply zero product property: If ab = 0 then a = 0 and b = 0.
\Rewrite the expression in long terms.
\Take out group to greatest common factor (GCF).
\Combine like terms using distributive property: .
Add 3 to each side.
\Subtract 7 from each side.
\The equation has three real roots, .
The solution is three real roots, .