Find All the Complex Roots

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

Tags

CCSS.HSA-REI.B.4B

When looking for possible imaginary/complex roots, we need to look at

• f(x)

• f(-x)

• -f(x)

• xⁿ

Tags

CCSS.HSN.CN.C.9

Write the equation of the polynomial in factored form with solutions of 3i, -3i, -2+2i, -2-2i

Mathematical Equivalence

ON

Tags

CCSS.HSF-IF.C.7C

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

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

• 1

• 2

• 3

• 4

Tags

CCSS.HSN.CN.C.9

Write in factored form using the following roots.

• (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