To simplify the expression
\[ \frac{3x^2 + 2x - 5x - 2x^2 + 2}{(x-2)(x-1)(x+2)(x-2)(x+1)(x+2)}, \]
let's break it down step by step!
Step 1: Simplify the Numerator
We start with the numerator:
\[ 3x^2 + 2x - 5x - 2x^2 + 2 \]
We can combine the like terms:
- The \(x^2\) terms: \(3x^2 - 2x^2 = 1x^2\) (or just \(x^2\))
- The \(x\) terms: \(2x - 5x = -3x\)
- And we have a constant term: \( +2\)
Putting all this together, we get:
\[ x^2 - 3x + 2 \]
Step 2: Factor the Numerator
Now, we need to factor \(x^2 - 3x + 2\). We are looking for two numbers that multiply to \(2\) and add to \(-3\). These numbers are \(-1\) and \(-2\). So we can factor it as:
\[ (x-1)(x-2) \]
Step 3: Simplify the Denominator
Next, let's look at the denominator:
\[ (x-2)(x-1)(x+2)(x-2)(x+1)(x+2) \]
Notice that \((x-2)\) appears twice and \((x+2)\) appears twice too. We can rewrite it as:
\[ (x-1)(x-2)^2(x+2)^2(x+1) \]
Step 4: Put It All Together
Now we combine the simplified numerator and denominator:
\[ \frac{(x-1)(x-2)}{(x-1)(x-2)^2(x+2)^2(x+1)} \]
Step 5: Cancel Common Factors
Next, we can cancel out the common factors from the top and bottom. The \( (x-1) \) cancels out, and so does one \( (x-2) \):
\[ \frac{1}{(x-2)(x+2)^2(x+1)} \]
Final Answer
So, the final simplified expression is:
\[ \frac{1}{(x-2)(x+2)^2(x+1)} \]
And that’s how you simplify that expression step-by-step!