Expanding the Expression: (d^2 + 3)(d^2 + 2d + 1)
This problem involves expanding a product of two quadratic expressions. We can achieve this by using the distributive property (also known as FOIL).
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:
(d^2 + 3)(d^2 + 2d + 1)
- First: (d^2)(d^2) = d^4
- Outer: (d^2)(2d) = 2d^3
- Inner: (3)(d^2) = 3d^2
- Last: (3)(2d) = 6d
- Last: (3)(1) = 3
Now, combine the terms:
d^4 + 2d^3 + 3d^2 + 6d + 3
Therefore, the expanded form of (d^2 + 3)(d^2 + 2d + 1) is d^4 + 2d^3 + 3d^2 + 6d + 3.