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Given that f(x)=x² -9x+18 and g(x)=x-3, find f(x)*g(x) and express the result as a polynomial in simplest form.

User Huy Hoang
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Final answer:

To find the product of the functions f(x) and g(x), you multiply each term of f(x) by each term of g(x), combine like terms, and express the result as a polynomial. The final simplified form of the product f(x)*g(x) is x³ - 12x² + 45x - 54.

Step-by-step explanation:

To find the product of the functions f(x) and g(x), denoted as f(x)*g(x), you simply need to multiply the two functions together. Given f(x) = x² - 9x + 18 and g(x) = x - 3, we first apply the distributive property to multiply each term in f(x) by each term in g(x).

The multiplication process is as follows:

  • (x²) * (x) = x³
  • (x²) * (-3) = -3x²
  • (-9x) * (x) = -9x²
  • (-9x) * (-3) = 27x
  • (18) * (x) = 18x
  • (18) * (-3) = -54

Next, we combine like terms:

  • x³ is the only cubic term.
  • -3x² and -9x² combine to -12x².
  • 27x and 18x combine to 45x.
  • And we have a constant term of -54.

Putting it all together, the product f(x)*g(x) can be expressed as a polynomial in simplest form:

x³ - 12x² + 45x - 54

User Sam Stewart
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