Question 102487
{{{3x+x(x-2)=4}}}.
First, solve the parenthesis by multiplying x-2 by x = x^2 - 2x.
{{{3x+x^2-2x=4}}}
Second, collect terms.
{{{x^2+x=4}}}
Third, subtract 4 from both sides.
{{{x^2+x-4=0}}}
That is the equation in standard form, which can be solved with the quadratic formula.
*[invoke quadratic "x", 1, 1, -4 ]