(x^2+6x+9)/(x+3)

2 min read Jun 17, 2024
(x^2+6x+9)/(x+3)

Simplifying the Expression (x^2 + 6x + 9) / (x + 3)

This expression can be simplified by factoring the numerator and then canceling common factors.

Factoring the Numerator

The numerator, x² + 6x + 9, is a perfect square trinomial. It can be factored as:

(x + 3)(x + 3)

Cancelling Common Factors

Now we have:

(x + 3)(x + 3) / (x + 3)

Since (x + 3) appears in both the numerator and denominator, we can cancel them out. This leaves us with:

x + 3

Restrictions

It's important to note that the original expression is undefined when x = -3. This is because the denominator becomes zero, which is not allowed in division.

Therefore, the simplified expression (x + 3) is equivalent to the original expression for all values of x except x = -3.

Conclusion

By factoring the numerator and canceling common factors, we simplified the expression (x² + 6x + 9) / (x + 3) to x + 3, with the restriction that x ≠ -3.

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