Quiz 2.2 Solving Quadratic Functions; Complex Numbers

What does i² equal?

• -1

• √-1

• 1

• -√1

James is trying to find the square root of the product of -108 and the square of the imaginary unit (i). What is the simplified form of the result?
√(-108)

• 3i√6

• 3i√20

• 6i√3

• 20i√3

Simplify 3i - (4 + 7i)

• -4 + 10i

• 21 - 12i

• 4 - 10i

• -4 - 4i

Aria and Kai are working on a physics problem that involves complex numbers. They need to find the product of the complex numbers (2i) and (3i). What is the result?

• 5i

• -5

• 6i

• -6

Emma is trying to calculate the value of i⁶⁶ in a complex number problem. What is the result?

• 1

• i

• -1

• -i

Priya is trying to solve a complex number problem and she needs to find the value of i⁵². What is the correct value?

• i

• -i

• 1

• -1

Abigail is learning about complex numbers in her math class. She wants to write a complex number in the correct form. How should she write it?

• a-bi

• a+bi

• ai+b

• ai-b

• -i

• i

• 1

• -1

What is the simplified form of (-3 + 2i)(1 - 4i)?

• -2 - 2i

• 5 + 14i

• -11 -10i

• -3 -8i

Complete the square for

x² - 14x + __

(type the missing value that goes in the blank)