3 years ago

(5x^3-3x^4-2x-9x^2-2)+(3x^3+2x^2-5x-7)

Mathematics

1 answer:

Anika [276]3 years ago

8 0

Answer:

-3x⁴ + 8x³ - 9x² - 7x - 9

General Formulas and Concepts:

Combining like terms

Step-by-step explanation:

<u>Step 1: Define expression</u>

(5x³ - 3x⁴ - 2x - 9x² - 2) + (3x³ + 2x² - 5x - 7)

<u>Step 2: Simplify</u>

Combine like terms (x³): -3x⁴ + 8x³ - 9x² - 2x - 5x - 2 - 7
Combine like terms (x): -3x⁴ + 8x³ - 9x² - 7x - 2 - 7
Combine like terms (constants): -3x⁴ + 8x³ - 9x² - 7x - 9

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1. If the length of a rectangle is 6 more than its width, and its perimeter is 48

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For this case we have that by definition, the perimeter of the rectangle is given by:

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Answer:

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the length of the rectangle is 15 inches

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