Verified Answer :

(x + 7)(x - 4) = x^2 - 4x + 7x - 28 = x^2 + 3x - 28


Answer:

Option C is correct

\(x^2+3x-28\)

Step-by-step explanation:

Given the function:

\(f(x) = x+7\) and \(g(x) = x-4\)

we have to find the \(f(x) \cdot g(x)\)

\(f(x) \cdot g(x)\)

⇒\((x+7) \cdot (x+4)\)

Distribute the first term of the first expression to the second expression and second term of the first expression to the second expression.

⇒\(x(x-4)+7(x-4)\)

Using distributive property: \(a\cdot(b+c) = a\cdot b+ a\cdot c\)

\(x^2-4x+7x-28\)

Combine like terms;

\(x^2+3x-28\)

Therefore, \(f(x) \cdot g(x)\) we get, \(x^2+3x-28\)