Complex Numbers Review

What is (3 + 2i) + (1 - 4i)?

• 4 + 2i

• 4 - 2i

• 5 - 6i

• 2 - 6i

Find the conjugate of the complex number 5 + 7i.

• 5 + 7i

• 5 + 7

• 5 - 7i

• 7 - 5i

What is (-2 + 6i) + (4 - 3i)?

• -6 + 9i

• 6 - 3i

• -2 - 3i

• 2 + 3i

What is (-3 + 2i)(1 + 5i)?

• 4 + 8i

• 10 - 3i

• -13 - 13i

• -8 + 7i

Find the conjugate of the complex number -4 - 9i.

• -4 - 9i

• 4 + 9i

• -4 + 9

• -4 + 9i

What is the sum of (7 + 3i) and (-2 - 5i)?

• 5 - 2i

• -5 + 8i

• 9 - 8i

• 3 - 2i

Find the product of (6 - 2i)(-3 + 4i):

• -10 + 30i

• 10 - 30i

• -10 - 30i

• -10 + 20i

Find the conjugate of the complex number 2 - 8i.

• -2 - 8i

• -2 + 8i

• 2 - 8i

• 2 + 8i

Which of the following is correct?

There are two that are correct

• 7i - 4i = 3

• i squared is equal to negative 1

• i to the one hundred power is equal to 1

• i to the fortieth power is i

When simplifying exponents with i that are larger numbers, you always divide the exponent by _ first, and then you find the remainder.