Complex Conjugates and Zeros

Use the Complex Conjugate Root Theorem to state another complex solution. Given that 3+5i is a root. 

• -3+5i
• -3-5i
• -5i
• 3-5i

Tags

CCSS.HSN.CN.A.3

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

What is the degree of the following polynomial that has 4 real roots and 2 complex roots?

• 4
• 2
• 8
• 6

Tags

CCSS.HSN.CN.C.9

All imaginary roots comes in pairs.

• True
• False

Tags

CCSS.HSN.CN.C.9

Name the Theorem
If P(x) is a polynomial with rational coefficients, then the irrational roots of P(x) = 0 occur in conjugate pairs.

• Binomial Theorem
• Factor Theorem
• Conjugate Root Theorem
• Rational Root Theorem

All zeros containing a square root sign comes in pairs.

• True

• False

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

What would be the roots of x²-9?

• 3

• -3

• 3, -3

• 3i, -3i

Tags

CCSS.8.EE.A.2