Quiz about Multiplying Complex Numbers

Question 1

Perform the indicated operations and write the answer in complex form.

$$\left(3-2i\right)\left(7+6i\right)$$

Accepted Answer

$$33+4i$$

Answer

$$9+4i$$

Answer

$$21+16i$$

Answer

$$21-12i$$

Question 2

Perform the indicated operations and write the answer in complex form.

$$\left(5+6i\right)\left(1-7i\right)$$

Accepted Answer

$$47-29i$$

Answer

$$5-71i$$

Answer

$$47+41i$$

Answer

$$-37+41i$$

Question 3

Perform the indicated operations and write the answer in complex form.

$$\left(9+8i\right)\left(5-5i\right)$$

Accepted Answer

$$85-5i$$

Answer

$$5+85i$$

Answer

$$85+5i$$

Answer

$$-40i^2-5i+45$$

Question 4

Perform the indicated operations and write the answer in complex form.

$$\left(8-6i\right)\left(-5-3i\right)$$

Accepted Answer

$$-58+6i$$

Answer

$$-22-54i$$

Answer

$$-22+6i$$

Answer

$$-58-54i$$

Question 5

Perform the indicated operations and write the answer in complex form.

$$\left(4+9i\right)^2$$

Accepted Answer

$$-65+72i$$

Answer

$$97+72i$$

Answer

$$16+72i+81i^2$$

Answer

$$-65$$

Question 6

Perform the indicated operations and write the answer in complex form.

$$\left(1+3i\right)\left(5+2i\right)$$

Accepted Answer

$$-1+17i$$

Answer

$$-11-17i$$

Answer

$$11-17i$$

Answer

$$1-17i$$

Question 7

Perform the indicated operations and write the answer in complex form.

$$\left(2-3i\right)\left(7+5i\right)$$

Accepted Answer

$$29-11i$$

Answer

$$-29-11i$$

Answer

$$29+11i$$

Answer

$$-29+11i$$

Question 8

Perform the indicated operations and write the answer in complex form.

$$\left(i-20\right)\left(3+20i\right)$$

Accepted Answer

$$-80-397i$$

Answer

$$-379+80i$$

Answer

$$80+400i$$

Answer

$$80-39i$$

Question 9

Perform the indicated operations and write the answer in complex form.

$$-i\left(-6+3i\right)+8i\left(-8+4i\right)$$

Accepted Answer

$$-29-587i$$

Answer

$$-37+8i$$

Answer

$$29-70i$$

Answer

$$-38-61i$$

Question 10

Perform the indicated operations and write the answer in complex form.

$$i\left(2i\right)\left(8i\right)$$

Accepted Answer

$$-16i$$

Answer

$$11i$$

Answer

$$16i$$

Answer

$$16$$

Question 11

Perform the indicated operations and write the answer in complex form.

$$\left(3-6i\right)^2$$

Accepted Answer

$$-25-36i$$

Answer

$$9-36i$$

Answer

$$45-36i$$

Answer

$$6-12i$$

Question 12

Perform the indicated operations and write the answer in complex form.

$$\left(4+3i\right)\left(2+2i\right)$$

Accepted Answer

$$2+14i$$

Answer

$$2-14i$$

Answer

$$6+5i$$

Answer

$$2+i$$

Question 13

Perform the indicated operations and write the answer in complex form.

$$\left(2+6i\right)\left(3+5i\right)$$

Accepted Answer

$$-24+28i$$

Answer

$$6+11i$$

Answer

$$1+i$$

Answer

$$36+28i$$

Multiplying Complex Numbers

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics