Simplifying the Expression: (x-1)(x-2)(x^2-9x+14)/(x-7)(x^2-3x+2)
This expression involves a fraction with polynomials in both the numerator and denominator. To simplify it, we need to factor the polynomials and cancel out any common factors.
1. Factor the Polynomials
- Numerator:
- (x-1)(x-2)(x^2-9x+14)
- Notice that (x^2-9x+14) can be factored as (x-7)(x-2)
- Therefore, the numerator becomes: (x-1)(x-2)(x-7)(x-2)
- Denominator:
- (x-7)(x^2-3x+2)
- (x^2-3x+2) can be factored as (x-2)(x-1)
- The denominator becomes: (x-7)(x-2)(x-1)
2. Simplify the Expression
Now our expression is: [(x-1)(x-2)(x-7)(x-2)] / [(x-7)(x-2)(x-1)]
We can cancel out the common factors: (x-1), (x-2), and (x-7).
3. Final Result
After canceling out the common factors, we are left with (x-2).
Important Note: We have to be careful about the values of x that make the denominator zero, as this would make the expression undefined. In this case, x cannot be equal to 7, 2, or 1.
Therefore, the simplified form of the expression (x-1)(x-2)(x^2-9x+14)/(x-7)(x^2-3x+2) is (x-2), where x ≠ 7, 2, or 1.