Simplifying Polynomial Expressions: A Step-by-Step Guide
In algebra, we often encounter expressions involving variables and their powers. These expressions can be simplified by combining like terms. Let's explore how to simplify the expression:
(w^3 - 3w^2 + 12w + 8) + (2w^3 - 18w + 4)
Step 1: Identify Like Terms
- Like terms have the same variable and exponent. For example,
w^3
and2w^3
are like terms, whilew^3
andw^2
are not.
Let's identify the like terms in our expression:
- w^3 terms:
w^3
and2w^3
- w^2 terms:
-3w^2
(there's no other w^2 term) - w terms:
12w
and-18w
- Constant terms:
8
and4
Step 2: Combine Like Terms
Now we combine the coefficients of like terms:
- w^3 terms:
w^3 + 2w^3 = 3w^3
- w^2 terms:
-3w^2
(remains the same) - w terms:
12w - 18w = -6w
- Constant terms:
8 + 4 = 12
Step 3: Write the Simplified Expression
Finally, we combine all the simplified terms:
**(w^3 - 3w^2 + 12w + 8) + (2w^3 - 18w + 4) = ** 3w^3 - 3w^2 - 6w + 12
Therefore, the simplified form of the given expression is 3w^3 - 3w^2 - 6w + 12.