Question

If g(x)=x-4 and f(x)=x+5 find f(x).g(x)

Answer 1

Answer:

x^3+x-20.

Step-by-step explanation:

given, g(x)= x-4, f(x)= x+5

f(x).g(x)

= (x-4)(x+5)

= x(x+5)-4(x+5)

= x^2+5x-4x-20

=x^2+x-20.

Answer 2

SOLUTION

GIVEN

g(x) = x - 4 and f(x) = x + 5

TO DETERMINE

The value of f(x).g(x)

EVALUATION

Here it is given that ,

g(x) = x - 4 and f(x) = x + 5

Now we have

$\sf f(x).g(x)$

$\sf = (x + 5).(x - 4)$

$\sf = x(x - 4) + 5(x - 4)$

$\sf = {x}^{2} - 4x + 5x - 20$

$\sf = {x}^{2} + x - 20$

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