Find Imaginary Roots

If the discriminant is negative, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solutions

Tags

CCSS.HSA-REI.B.4B

Are the roots of the function f(x)=3x²+3x+3 real or imaginary? (hint: graph it)

• Real Roots

• Imaginary Roots

• Impossible to tell

• Both

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Which of the following would be a root with 3i?

• 3i²

• -3i

• 3i

• -3i²

Which of the following would be the correct factored form with roots 2, 5i, and 6?

• (x-6)(x-2)(x+5i)(x-5i)

• (x+6)(x+2)(x+5i)

• (x-6)(x-2)(x-5i)

• (x+6)(x+2)(x-5i)

Tags

CCSS.HSA.APR.B.3

If a+bi is a root of a polynomial, then _______ is also a root.

• i²

• a-bi

• a+bi

• -i²

Tags

CCSS.HSN.CN.C.9

Use the Complex Conjugate Root Theorem to state another complex solution. Given that -2-5i is a root. 

• -2-5i

• -2+5i

• 2+5i

• 5i

Tags

CCSS.HSN.CN.A.3

Use the Complex Conjugate Root Theorem to state another complex solution. Given that -7i is a root. 

• 7i

• -7i+1

• 1-7i

• 1+7i

Tags

CCSS.HSN.CN.A.3

Write in factored form using the following roots.

7, -2i

• (x-7)(x-2i)

• (x-7)(x+2i)(x-2i)

• (x-7)(x+2i)

• (x-7)(x+7)(x-2i)

Tags

CCSS.HSA.APR.B.3

Expand into standard form

(x+2i)(x-2i)

• x²-4

• x²+4

• x+2i²

• x²+2i²

Tags

CCSS.HSN.CN.C.8

How many complex roots (real or imaginary) of x² + 2x + 1?

• 1

• 2

• 3

• 4

Tags

CCSS.HSN.CN.C.9