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29. Given f(x) = 3x + 5 and g(x) = – 8x – 10,

a. Find f(x) + g(x)

b. Find f(x) – g(x)

c. Find f(x)  g(x)

d. Find f(x) ÷ g(x)

e. Determine which of the above are polynomials.

User Tiagodws
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1 Answer

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Final answer:

To find f(x) + g(x), we add the two functions. To find f(x) - g(x), we subtract g(x) from f(x). To find f(x) * g(x), we multiply the two functions. To find f(x) / g(x), we divide f(x) by g(x) (undefined).

Step-by-step explanation:

To solve the given problem, we need to find the sum, difference, product, and quotient of the two functions f(x) = 3x + 5 and g(x) = -8x - 10.

a. To find f(x) + g(x), we simply add the two functions together:

f(x) + g(x) = (3x + 5) + (-8x - 10) = -5x - 5

b. To find f(x) - g(x), we subtract g(x) from f(x):

f(x) - g(x) = (3x + 5) - (-8x - 10) = 11x + 15

c. To find f(x) * g(x), we multiply the two functions:

f(x) * g(x) = (3x + 5) * (-8x - 10) = -24x^2 - 10x - 40x - 50 = -24x^2 - 50x - 50

d. To find f(x) / g(x), we divide f(x) by g(x). However, we cannot divide by zero, so we need to make sure g(x) is not equal to zero:

-8x - 10 ≠ 0

-8x ≠ 10

x ≠ -5/4

Therefore, the quotient f(x) / g(x) is undefined.

e. The above operations involve polynomials, except for the division which is not a polynomial.

User Circey
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