Chapter 7: Q. 65 (page 653)

For the following exercises, find $R (x) = f (x) . g (x)$ where $f (x) a n d g (x)$ are given.
$f (x) = \frac{4 x}{x^{2} - 3 x - 10} a n d g (x) = \frac{x^{2} - 25}{8 x^{2}}$

Short Answer

Expert verified

The value of $R (x) = \frac{(x + 5)}{2 x (x + 2)}$

Step by step solution

Step 1. Given Information

$f (x) = \frac{4 x}{x^{2} - 3 x - 10} a n d g (x) = \frac{x^{2} - 25}{8 x^{2}}$

Step 2. Factor each numerator and denominator

$R (x) = \frac{4 x}{x^{2} - 3 x - 10} . \frac{x^{2} - 25}{8 x^{2}} R (x) = \frac{4 x}{(x - 5) (x + 2)} . \frac{(x - 5) (x + 5)}{8 x \times x} R (x) = \frac{4 x (x - 5) (x + 5)}{8 x . x (x - 5) (x + 2)}$

Step 3. Remove common factors and simplify

$R (x) = \frac{(x + 5)}{2 x (x + 2)}$

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For the following exercises, find $R (x) = f (x) . g (x)$ where $f (x) a n d g (x)$ are given.
$f (x) = \frac{4 x}{x^{2} - 3 x - 10} a n d g (x) = \frac{x^{2} - 25}{8 x^{2}}$

Short Answer

Step by step solution

Step 1. Given Information

Step 2. Factor each numerator and denominator

Step 3. Remove common factors and simplify

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For the following exercises, findRx=fx.gxwherefxandgxare given.fx=4xx2-3x-10andgx=x2-258x2

Short Answer

Step by step solution

Step 1. Given Information

Step 2. Factor each numerator and denominator

Step 3. Remove common factors and simplify

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Geometry

Probability and Statistics

Decision Maths

Discrete Mathematics

Mechanics Maths

Statistics

Study anywhere. Anytime. Across all devices.

For the following exercises, find $R (x) = f (x) . g (x)$ where $f (x) a n d g (x)$ are given.
$f (x) = \frac{4 x}{x^{2} - 3 x - 10} a n d g (x) = \frac{x^{2} - 25}{8 x^{2}}$