Imaginary numbers

Imaginary Numbers

Multiple Choice

$$\sqrt[]{-16}=$$

• $$4i$$

• $$-4$$

• $$-4i$$

• $$2i\sqrt[]{8}$$

• None of these are correct.

Multiple Choice

$$\sqrt[]{-8}$$

• $$2i\sqrt[]{2}$$

• $$4i$$

• $$-4i$$

• $$-2i\sqrt[]{2}$$

• none of these are correct.

Multiple Choice

$$\sqrt[]{-50}$$

• $$5i\sqrt[]{2}$$

• $$25i$$

• $$-5i$$

• $$-5i\sqrt[]{2}$$

• none of these are correct.

Multiple Choice

$$-\sqrt[]{36}$$

• $$6i$$

• $$-6i$$

• $$-6$$

• 6

• None of these are correct.

Multiple Choice

$$-\sqrt[]{-9}$$

• $$3i$$

• $$-3i$$

• $$-3$$

• 3

• None of these are correct.

Multiple Choice

$$\sqrt[]{-48}$$

• $$-4i\sqrt[]{3}$$

• $$-4i$$

• $$-4\sqrt[]{3}$$

• $$3i\sqrt[]{4}$$

• none of these are correct.

Multiple Choice

$$\sqrt[]{-45}$$

• $$-3\sqrt[]{5}$$

• $$3i\sqrt[]{5}$$

• $$5i\sqrt[]{3}$$

• $$-5i\sqrt[]{3}$$

• None of these are correct.

Multiple Choice

$$\sqrt[]{-10}$$

• $$-2i\sqrt[]{5}$$

• $$2i\sqrt[]{5}$$

• $$5i\sqrt[]{2}$$

• $$i\sqrt[]{10}$$

• None of these are correct.