Finding Complex Solutions

Solve x² - 5x + 10 = 0

What is the discriminant for 5x² + x − 2 = 0

• -39

• 42

• -41

• none of these

Find the roots of 0=x³-4x²+2x-8

• ±2,4

• ±2i,4

• ±i√2,4

• ±√2,4

Given one complex zero use the conjugate root theorem to find another.  Zero is 7-5i

• -7+5i

• 7-5i

• -7-5i

• 7+5i

Simplify √-4

• 2i

• -2i

• 2

• 4i

Solve the quadratic equation.

$x^2+4x+20=0$

Use the Fundamental Theorem of Algebra to determine the total number of solutions.

• A

• B

• C

• D

How many total roots/zeros are there in the polynomial.   

• A

• B

• C

• D

Find all the zeros of the polynomial. 

• A

• B

• C

• D