Adding Polynomials: A Step-by-Step Guide
This article will guide you through the process of adding two polynomials: (5m³ + 2m² - m) + (m² + 4m - 2).
Understanding Polynomials
Polynomials are expressions that consist of variables and constants, combined using addition, subtraction, multiplication, and non-negative integer exponents. In our example, both expressions are polynomials.
The Addition Process
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Identify like terms: Look for terms that have the same variable and exponent. In this case, we have:
- m³ terms: 5m³
- m² terms: 2m² and m²
- m terms: -m and 4m
- Constant terms: -2
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Combine like terms: Add the coefficients of each like term. Remember that if a term has no coefficient, it's understood to be 1.
- m³ terms: 5m³
- m² terms: 2m² + 1m² = 3m²
- m terms: -1m + 4m = 3m
- Constant terms: -2
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Write the simplified polynomial: Combine the results of step 2 to get the final answer.
Therefore, (5m³ + 2m² - m) + (m² + 4m - 2) = 5m³ + 3m² + 3m - 2
Key Points to Remember
- Only like terms can be combined.
- When combining like terms, only the coefficients are added.
- The exponents of the variables remain unchanged.
By following these steps, you can confidently add any two polynomials.