Expanding (3b-4)(b+2)
This article will guide you through the process of expanding the expression (3b-4)(b+2) using the FOIL method.
Understanding FOIL
The FOIL method is a mnemonic acronym used to remember the steps involved in multiplying two binomials. It stands for:
- 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 FOIL to (3b-4)(b+2)
- First: (3b) * (b) = 3b²
- Outer: (3b) * (2) = 6b
- Inner: (-4) * (b) = -4b
- Last: (-4) * (2) = -8
Now we combine the results: 3b² + 6b - 4b - 8
Simplifying the Expression
Finally, we simplify the expression by combining like terms: 3b² + 2b - 8
Therefore, the expanded form of (3b-4)(b+2) is 3b² + 2b - 8.