8 videos in "Factoring Application Problems"
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WP1-Solve number puzzle by factoring
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WP2-Solve Triange if you know perimeter
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WP3-Solve Rectangle if you know area
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WP4-Solve triangle if you know area
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WP5-Solve triangle using Pythagorean theorem
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WP6-Find time using physics formula
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WP7-Find interest rate based on investment formula
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WP8 - Solve Triangle using Pythagorean Theorem
WP3-Solve Rectangle if you know area
WP3-Solve Rectangle if you know area
557 views - 00:04:21
Part of video series Word Problems
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
This is a Word Problem you solve by writing an equation and factoring. Word Problem 3 - Area of a Rectangle-Use the info from a picture of a rectangle to find the length and width is its area is 54 sq. ft.
- How can you use the information from a picture that one pair of sides of a rectangle is x - 1 and the other pair is x + 2 to find the length and width of the rectangle if the area is 54 ft^2?
- How do you solve geometry word problems by writing, factoring, and solving quadratic equations?
- How do you solve (x + 2)(x - 1) = 54?
- How do you solve a quadratic equation if it does not equal zero?
- How do you know when an answer to a quadratic equation does not make sense in a word problem?
- How can you check to make sure that your answer is correct in a word problem?
The problem shown in this lesson is a classic word problem in math. You have to know the area formula for a rectangle, write out an equation that ends up multiplying out to a quadratic equation. This is a great tutorial.
