Exploring Adding and Subtracting Imaginary Numbers

What is the value of i squared?

• 1

• -1

• 0

• i

How should you treat the variable i when combining like terms?

• As a constant

• As a variable like x

• As a fraction

• As a coefficient

What is the result of 3i + 5i - i?

• 7i

• 8i

• 9i

• 6i

When multiplying imaginary numbers, what should you replace i squared with?

• i

• 1

• 0

• -1

What is the result of 6i * 2i?

• 12i

• -12

• 12

• -12i

When adding complex numbers, which terms can be combined?

• Real parts with real parts and imaginary parts with imaginary parts

• Only imaginary parts

• Only real parts

• Real parts with imaginary parts

What is the result of (3 + 4i) + (1 + 6i)?

• 3 + 4i

• 4 + 6i

• 3 + 10i

• 4 + 10i

How does a negative sign in front of parentheses affect the terms inside?

• It halves the value of each term inside

• It doubles the value of each term inside

• It changes the sign of each term inside

• It does not affect the terms

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

• -5 - 10i

• -1 - 10i

• -5 + 2i

• -1 + 2i

What is the standard form of a complex number?

• ab + i

• ai + b

• a - bi

• a + bi