Expanding the Expression (2x+5)(x+4)
This article will guide you through the process of expanding the expression (2x+5)(x+4). We will use the FOIL method, a common technique for multiplying binomials.
Understanding the FOIL Method
FOIL stands for First, Outer, Inner, Last, and it helps us remember the steps to multiply two binomials.
- First: Multiply the first terms of each binomial.
- Outer: Multiply the outer terms of the binomials.
- Inner: Multiply the inner terms of the binomials.
- Last: Multiply the last terms of each binomial.
Applying the FOIL Method
Let's apply the FOIL method to our expression (2x+5)(x+4):
- First: (2x)(x) = 2x²
- Outer: (2x)(4) = 8x
- Inner: (5)(x) = 5x
- Last: (5)(4) = 20
Combining the terms
Now we combine the terms we got from each step:
2x² + 8x + 5x + 20
Simplifying the expression
Finally, we combine the like terms (the terms with 'x'):
2x² + 13x + 20
Therefore, the expanded form of (2x+5)(x+4) is 2x² + 13x + 20.