Simplifying Polynomial Expressions: (4x - 2x^3) + (5x^3 - 4x + 5)
This article will guide you through the process of simplifying the polynomial expression (4x - 2x^3) + (5x^3 - 4x + 5).
Understanding the Basics
Before we begin, let's refresh some fundamental concepts about polynomials:
- Polynomials are expressions made up of variables and constants, combined using addition, subtraction, multiplication, and non-negative integer exponents.
- Terms within a polynomial are separated by addition or subtraction signs.
- Like terms have the same variable and exponent.
Simplifying the Expression
-
Remove the parentheses: Since we are adding the two polynomials, the parentheses don't affect the order of operations.
(4x - 2x^3) + (5x^3 - 4x + 5) = 4x - 2x^3 + 5x^3 - 4x + 5
-
Identify like terms: Group together terms with the same variable and exponent.
-2x^3 + 5x^3 + 4x - 4x + 5
-
Combine like terms: Combine the coefficients of the like terms.
3x^3 + 0 + 5 = 3x^3 + 5
Final Result
The simplified form of the expression (4x - 2x^3) + (5x^3 - 4x + 5) is 3x^3 + 5.