if f(x)=x2^+1 and g(x)=x-2

find (f*g)(x)

1 answer

To find \((f \cdot g)(x)\), we need to multiply the functions \(f(x)\) and \(g(x)\).

Given:

  • \(f(x) = x^2 + 1\)
  • \(g(x) = x - 2\)

The product of the two functions is given by:

\[ (f \cdot g)(x) = f(x) \cdot g(x) \]

Substituting the expressions we have:

\[ (f \cdot g)(x) = (x^2 + 1)(x - 2) \]

Now, we can multiply the terms:

\[ (f \cdot g)(x) = x^2 \cdot (x - 2) + 1 \cdot (x - 2) \]

This expands to:

\[ = x^3 - 2x^2 + x - 2 \]

So, the final result for \((f \cdot g)(x)\) is:

\[ (f \cdot g)(x) = x^3 - 2x^2 + x - 2 \]