Algebra 2 - Learn how to multiply two complex numbers in using the box method, (3 - 2i)(1 + 3i)

Algebra 2 - Learn how to multiply two complex numbers in using the box method, (3 - 2i)(1 + 3i)

Assessment

Interactive Video

Mathematics, Information Technology (IT), Architecture

11th Grade - University

Hard

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The video tutorial covers the multiplication of complex numbers using binomials and the FOIL method. It explains the distributive property and introduces the box method as an alternative. The instructor demonstrates how to multiply real and imaginary numbers, emphasizing the importance of combining like terms and understanding the concept of i squared. The tutorial concludes with finalizing the expression in a plus bi format.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is NOT mentioned as a way to multiply binomials?

Graphical Method

Box Method

FOIL Method

Distributive Property

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When multiplying complex numbers, what is the result of multiplying a real number by an imaginary number?

Zero

A real number

A complex number

An imaginary number

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does i^2 equal in complex number calculations?

-1

1

i

0

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the expression 3 + 7i, what is the real part?

10

3

7

i

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the standard form for expressing complex numbers?

a - bi

ab + i

a + bi

ai + b