Solving Quadratic Equations with Complex Roots

Solve x² - 5x + 10 = 0

• (5 - i√15)/2 , (5 + i√15)/2

• (5 - √15)/2 , (5 + √15)/2

• (5 - i√65)/2 , (5 + i√65)/2

• (5 - √65)/2 , (5 + √65)/2

Solve -2x² + 4x = 9

• (2 - i√14)/2 , (2 + i√14)/2

• (2 - i√-56)/2 , (2 + i√-56)/2

• (2 - i√-14)/2 , (2 + i√-14)/2

• (2 - √14)/2 , (2 + √14)/2

Solve by Quadratic Equation
4x²-7x+5=0

• (7±i√31)/8

• (-1±i√55)/8

• (-3±i√55)/4

• (1±i√57)/8

What are the zeros of the function f(x) = x² + 64?

• -8 and 8

• -8i and 8i

• (-√8) i and (√8) i

• -√8 and √8

Solve x² - 5x + 10 = 0

• (5 - i√15)/2  ,  (5 + i√15)/2

• (5 - √15)/2  ,  (5 + √15)/2

• (5 - i√65)/2  ,  (5 + i√65)/2

• (5 - √65)/2  ,  (5 + √65)/2

x² - 5x + 10 = 0

• (5 - i√15)/2  ,  (5 + i√15)/2

• (5 - √15)/2  ,  (5 + √15)/2

• (5 - i√65)/2  ,  (5 + i√65)/2

• (5 - √65)/2  ,  (5 + √65)/2

• A
• B
• C
• D

• A
• B
• C
• D

Solve for x: 

• x = {-4, -1}

• x = {-1, -4}

• x = {2+i, 2-i}

• x = {-2+i, -2-i}

Which is a solution to x² - 4x + 5 = 0

• 2 + i

• 2i

• 2 - 2i

• -2 - i