Test: Test 2 [Lessons 08-12] Find all the complex roots. Write the answer in exponential form. The complex fourth roots of - 4i Zo = (Simplify your answer. Type an exact answer, using * as needed. Use integers or fractions for any numbers in the expression.) (Simplify your answer. Type an exact answer, using it as needed. Use integers or fractions for any numbers in the expression.) Simplify your answer. Type an exact answer, using : as needed. Use integers or fractions for any numbers in the expression. ) (simplify your answer. Type an exact answer, using : as needed. Use integers or fractions for any numbers in the expression