Expanding the Expression (2x + 3)(x + 5)
This article will guide you through the process of expanding the expression (2x + 3)(x + 5) using the FOIL method.
What is FOIL?
FOIL is an acronym that stands for First, Outer, Inner, Last. It's a mnemonic device used to help remember the steps involved in multiplying two binomials.
Applying FOIL to (2x + 3)(x + 5)
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First: Multiply the first terms of each binomial: (2x) * (x) = 2x²
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Outer: Multiply the outer terms of the binomials: (2x) * (5) = 10x
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Inner: Multiply the inner terms of the binomials: (3) * (x) = 3x
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Last: Multiply the last terms of each binomial: (3) * (5) = 15
Combining Like Terms
After applying FOIL, we have the following expression:
2x² + 10x + 3x + 15
Now, combine the like terms (10x and 3x):
2x² + 13x + 15
The Expanded Expression
Therefore, the expanded form of (2x + 3)(x + 5) is 2x² + 13x + 15.