Pregunta
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The simplified expression is
.
Solución
To solve the expression
using algebra tiles, we’ll break down each polynomial and perform the subtraction step by step.
Understanding Algebra Tiles
Algebra tiles are a visual representation of algebraic expressions, where:
- Squares represent
terms. - Rectangles represent
terms. - Small squares represent constant terms.
Negative tiles are typically shown with different colors or marked with a minus sign.
Step-by-Step Solution
-
Represent Each Polynomial with Algebra Tiles:
-
First Polynomial:
- Squares: 9 negative
tiles - Rectangles: 10 negative
tiles - Small Squares: 8 negative constant tiles
- Squares: 9 negative
-
Second Polynomial:
- Squares: 5 negative
tiles - Rectangles: 4 negative
tiles - Small Squares: 6 negative constant tiles
- Squares: 5 negative
-
-
Set Up the Subtraction:The expression is:Subtraction of the second polynomial is equivalent to adding its opposite:
-
Combine Like Terms:
-
Terms: -
Terms: -
Constant Terms:
-
-
Final Simplified Expression:Combining all the like terms gives:
Visual Representation with Algebra Tiles
While I can’t provide actual tiles here, imagine arranging the tiles as follows:
- Start with 9 negative
tiles, 10 negative tiles, and 8 negative constant tiles. - Subtracting (or adding the opposite of) 5 negative
tiles, 4 negative tiles, and 6 negative constant tiles means you’re effectively adding 5 positive tiles, 4 positive tiles, and 6 positive constant tiles. - After combining, you’ll have 4 negative
tiles, 6 negative tiles, and 2 negative constant tiles left.
Conclusion
Using algebra tiles helps visualize the subtraction by breaking down each term and combining like terms systematically. The simplified result of the given expression is:
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Bonus Knowledge
To solve the expression
using algebra tiles, start by translating the expression into algebra tiles. We’ll have negative tiles for the terms in the first group and positive tiles for the terms in the second.
-
For the first polynomial (
): - Use 9 negative
tiles, 10 negative tiles, and 8 negative unit tiles.
- Use 9 negative
-
For the second polynomial (
): - Since it’s being subtracted, we will actually add the positive equivalents of these tiles: 5 positive
tiles, 4 positive tiles, and 6 positive unit tiles.
- Since it’s being subtracted, we will actually add the positive equivalents of these tiles: 5 positive
Now, combine the groups:
- Combine the
tiles:
(so we’ll have 4 negative tiles) - Combine the
tiles:
(so we’ll have 6 negative tiles) - Combine the unit tiles:
(so we’ll have 2 negative unit tiles)
Putting all of this together, we find:
So, the final answer is
.
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