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artcher [175]
3 years ago
9

Perform the following operations and prove closure. Show your work. (x/x+3) + (x+2/x+5)

Mathematics
2 answers:
Westkost [7]3 years ago
8 0

Answer:

\frac{2(x^{2} + 5x + 3)}{(x+3)(x+5)}

Step-by-step explanation:

We need to sum the following two expressions:

\frac{x}{x+3} + \frac{x+2}{x+5}

\frac{x(x+5) + (x+2)(x+3)}{(x+3)(x+5)}

expanding the polynomial in the numerator:

\frac{2x^{2} + 10x + 6}{(x+3)(x+5)}

\frac{2(x^{2} + 5x + 3)}{(x+3)(x+5)}

This is the most simplified form we can get:

\frac{2(x^{2} + 5x + 3)}{(x+3)(x+5)}

Kipish [7]3 years ago
5 0

Answer:

\frac{2(x^{2}+5x+3)}{(x+3)(x+5)}

Step-by-step explanation:

The given expression is \frac{x}{x+3}+\frac{x+2}{x+5}

We have to simplify the given expression

\frac{x}{x+3}+\frac{x+2}{x+5}

= \frac{x(x+5)+(x+2)(x+3)}{(x+3)(x+5)}         [Distributive law]

= \frac{x^{2}+5x+x^{2}+3x+2x+6}{(x+3)(x+5)}

= \frac{2x^{2}+10x+6}{(x+3)(x+5)}

= \frac{2(x^{2}+5x+3)}{(x+3)(x+5)}

Finally the simplified form of the given expression is \frac{2(x^{2}+5x+3)}{(x+3)(x+5)}

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