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Tutorial - Combining complex numbers ex 5, (8 - 5i) - (-11 + 4i)

Tutorial - Combining complex numbers ex 5, (8 - 5i) - (-11 + 4i)

Assessment

Interactive Video

Mathematics

11th Grade - University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains how to work with imaginary and complex numbers, focusing on combining them using different methods, including the vertical method and the distributive property. An example problem is solved to demonstrate these techniques, and the importance of correctly combining real and imaginary components is emphasized.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a unique feature of imaginary numbers that distinguishes them from real numbers?

They can be combined with real numbers directly.

They have a tail in their notation.

They are always positive.

They are represented by the letter 'u'.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is NOT mentioned for combining complex numbers?

Horizontal method

Distributive property

Mental calculation

Vertical method

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When combining complex numbers, which components should be combined together?

Imaginary with real

Real with imaginary

Imaginary with imaginary

Real with real

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when you subtract a negative number from another negative number?

The result is always negative.

The result is always zero.

The result becomes positive.

The result is always imaginary.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example provided, what is the result of combining -5i and -4i?

9i

1i

-9i

-1i

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