In Exercises 1–3, perform the indicated operations and write the result in standard form. ___ ___ 2√−49 + 3√−64

In Exercises 1–10, perform the indicated operations and write the result in standard form. (3 − 4i)²

In Exercises 1–8, add or subtract as indicated and write the result in standard form. 6 − (−5 + 4i) − (−13 − i)

In Exercises 1–10, perform the indicated operations and write the result in standard form. (7 + 8i)(7 − 8i)

In Exercises 1–10, perform the indicated operations and write the result in standard form. 6 / 5+i

Plot the complex number $z=2-4i$ on the graph below.

Plot the complex number $z=-i$ on the graph below.

Plot the complex number $z=5$ on the graph below.