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Number and Quantity Videos 14 videos

CAHSEE Math 4.3 Number Sense
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Number Sense: Drill Set 4, Problem 3. Simplify the expression.

Unit Rate
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Approximately 874 people per day wonder what a unit rate is. If you're one of them, check out our video on unit rates and how to use them. (We just...

Solving Proportions Using Cross Products
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This video covers how to use cross products to solve for a missing number in a proportion by setting that proportion with a variable over the produ...

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ACT Math 2.2 Elementary Algebra 240 Views


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Description:

Elementary Algebra Drill 2: Problem 2. Can you find the product?

Language:
English Language

Transcript

00:03

Do you hear the people Shmoop. Oh Great Song.

00:06

Multiply: the quantity 4a plus b times the quantity 3a plus b.

00:12

And here are the potential answers

00:17

Ok, Very straightforward distribution problem in the form of: a times c plus b times c plus

00:24

a times d plus b times d.

00:29

Okay, here we go, 4a times 3a is 12a squared plus 3ab plus 4ab, which is 7ab plus b

00:40

times b which is b squared.

00:43

So the answer is 12a squared plus 7ab plus b squared.

00:47

Boom there we go. The Answer is B.

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