91Ó°ÊÓ

Convert each equation to polar coordinates and then sketch the graph.\(\left(x^{2}+y^{2}\right)^{2}=x^{2}-y^{2}\)

Convert all complex numbers to trigonometric form and then simplify each expression. Write all answers in standard form. $$ \frac{(1+i \sqrt{3})^{4}(\sqrt{3}-i)^{2}}{(1-i \sqrt{3})^{3}} $$