Simplify x/(x^2+3x+2)-1/((x+2)(x+1))

$\frac{x}{x^{2} + 3 x + 2} - \frac{1}{(x + 2) (x + 1)}$

Factor $x^{2} + 3 x + 2$ using the AC method.

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Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $2$ and whose sum is $3$ .

$1, 2$

Write the factored form using these integers.

$\frac{x}{(x + 1) (x + 2)} - \frac{1}{(x + 2) (x + 1)}$

Combine into one fraction.

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Reorder the factors of $(x + 2) (x + 1)$ .

$\frac{x}{(x + 1) (x + 2)} - \frac{1}{(x + 1) (x + 2)}$

Combine the numerators over the common denominator.

$\frac{x - 1}{(x + 1) (x + 2)}$

Simplify x/(x^2+3x+2)-1/((x+2)(x+1))

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