Solve Rational equation: with work

If the public debt of a country in 2009 was $10432000000000 and the budget for 2010 was in deficit by $201645000000, what was the public debt in 2010? do not include commas in your answer.

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

We just started the introduction into circles and i have no idea how to do this.