The Quadratic Formula Imaginary Numbers

• A
• B
• C
• D

What does √-1 = ?

• 1

• -1

• i

• i²

QUESTION 5

• A

• B 

• C 

• D 

Solve using the quadratic formula. f(x) = 2x²- 4x + 7

• (2±2i√10)/2

• (4±√40)/4

• (2±i√10)√/2

• (2±2i√40)/4

Does the following expression have a real or imaginary solution?

• Real

• Imaginary

Does the following expression have a real or imaginary solution?

• Real

• Imaginary

Solve for x: 

• x = {-4, -1}

• x = {-1, -4}

• x = {2+i, 2-i}

• x = {-2+i, -2-i}

Another way to express √-1 is?

• 1

• -1

• i

• 0

Solve for x

3x² - 6 = -9

• ±1

• ±i

• ±3

• ±3i

8i is an example of a(n) ____.

• vertex

• residual

• radicand

• imaginary number