Multiplying Binomials: (ab - 3/2cd)(2ab + 3cd)
This article will guide you through the process of multiplying the binomials (ab - 3/2cd)(2ab + 3cd). We will use the FOIL method to expand this expression.
FOIL 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.
Let's apply FOIL to our expression:
(ab - 3/2cd)(2ab + 3cd)
- F: (ab)(2ab) = 2a²b²
- O: (ab)(3cd) = 3abcd
- I: (-3/2cd)(2ab) = -3abcd
- L: (-3/2cd)(3cd) = -9/2c²d²
Now, combine the terms:
2a²b² + 3abcd - 3abcd - 9/2c²d²
Simplify by combining like terms:
2a²b² - 9/2c²d²
Therefore, the product of (ab - 3/2cd)(2ab + 3cd) is 2a²b² - 9/2c²d².