Simplifying the Expression: (x+2)(x+8)+(4x^2+8x-3)
This article will walk through the steps to simplify the given expression: (x+2)(x+8)+(4x^2+8x-3). We will use the distributive property and combining like terms to arrive at a simplified polynomial.
Step 1: Expand the product of the binomials
First, we need to expand the product of the two binomials: (x+2)(x+8). We can do this using the FOIL method (First, Outer, Inner, Last):
- First: x * x = x^2
- Outer: x * 8 = 8x
- Inner: 2 * x = 2x
- Last: 2 * 8 = 16
Combining these terms, we get: x^2 + 8x + 2x + 16 = x^2 + 10x + 16
Now our expression becomes: x^2 + 10x + 16 + (4x^2 + 8x - 3)
Step 2: Combine like terms
We can now combine the terms with the same power of x:
- x^2 terms: x^2 + 4x^2 = 5x^2
- x terms: 10x + 8x = 18x
- Constant terms: 16 - 3 = 13
Final Simplified Expression
Combining all these terms, we arrive at our simplified expression:
5x^2 + 18x + 13