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xz_007 [3.2K]
4 years ago
11

Add.

Mathematics
1 answer:
goldfiish [28.3K]4 years ago
7 0

Answer:

3x³ + 3x² - 3

Step-by-step explanation:

Step 1: Write expression

(2x³ + 4x² + 1) + (x³ - x² - 4)

Step 2: Combine like terms

3x³ + 3x² - 3

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Step-by-step explanation:

Although there's multiple ways to solve this problem, my method will be to simply find the area for the full triangle (the empty + orange triangles) and subtract the area of the smaller, empty triangle.

Now, you that area for a triangle is 1/2*base*height.

To find the measurements for the full triangle, you must add up the bases for the two smaller triangles:

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Now the total area can be calculated:

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Lastly, subtract the area of the empty triangle from the total triangle to find the orange triangle.

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