Solve Complex Numbers

Factor: 9n² + 1

• (3n + 1i) (3n - 1i)

• (3n - 1i) (3n - 1i)

• (n + 3) (n - 3)

• not factorable

• (n + 3i) (n - 3i)

Factor: x² + 16

• (x + 4i) (x - 4i)

• (x + 8) (x + 2)

• (x + 4i)²

• (x + 4) (x - 4)

• not factorable

Find the sum.
(5-2i) + (-7+8i)

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

Choose the correct answer for the operation pictured.
(4-7i)-(-3+6i)

• 7-13i

• 7-i

• 1-13i

• 1-i

(1-3i)(2+5i)

• 22-i

• 16-i

• 17-i

Simplify √-64

• 8

• -8

• 4

• 8i

(3 + 2i) + (4 - 5i)

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

(3i)(-2+4i)

• -6+12i

• -12-6i

• -2+7i

• 12+6i

(2i)(3i)

• 5i

• -5

• 6i

• -6