Submit Question Question 4 0/1 pt 319 D Evaluate the expression ( − 2 − 1i) − ( − 1 − 1ż) and write the result in the form a + bi. - The real number a equals The real number b equals Submit Question Question 5 0/1 pt3 18 OD Evaluate the expression (4+ 4i) (3 + 3i) and write the result in the form a + bi.