Operations on complex numbers

Operations on complex numbers

9th - 12th Grade

20 Qs

quiz-placeholder

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Operations on complex numbers

Operations on complex numbers

Assessment

Quiz

Mathematics

9th - 12th Grade

Hard

CCSS
HSN.CN.C.9

Standards-aligned

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

f(x)= x2(x – 2)3(x – 7)

State the zeros, include multiplicity.

0 (Mult of 2), 2 (Mult of 3), 7 (mult 1)
2 (Mult of 3), 7 (mult 1)
0, 2, 7
2 (mult of 2), 7 (mult of 3)

Tags

CCSS.HSN.CN.C.9

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the graph of a function crosses the x-axis, what does that mean about the multiplicity of that zero?

Even

Odd

None

Tags

CCSS.HSN.CN.C.9

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

f(x) = 2x3 - 3x2 + 4x -10

State the maximum number of turns the graph of f(x) could make.

3

2

1

0

Tags

CCSS.HSN.CN.C.9

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Solve

b=4/5, b=3

b=4, b=-3

b=1/5, b=3

b=4/5, b=-3

Tags

CCSS.HSN.CN.C.9

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the following is a solution to -x2-2x+8=0?

(-1,9)

(0,8)

No solutions

(-4,0)

Tags

CCSS.HSN.CN.C.9

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the polynomial equation, what would be the actual scenario of real vs. imaginary roots?

 x34x2+9x36x^3-4x^2+9x-36  

1 Real, 2 Imaginary

2 Real, 1 Imaginary

0 Real, 2 Imaginary

3 Real, 1 Imaginary

Answer explanation

Remember, imaginary roots can ONLY come in pairs!

Tags

CCSS.HSN.CN.C.9

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(x - 5)(x - 2) = 0

x = -5 and 2

x = 5 and 2

x = 5 and -2

x = -5 and -2

Tags

CCSS.HSN.CN.C.9

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