Given that f(x) = x2 –3x – 40 and g(x) = x +5, find (f +g)(x) and express the result in standard form.

Step-by-step explanation:

So we have the two functions:

And we want to find (f+g)(x). This is the same as:

Substitute:

Combine like terms:

Add:

And we're done!

a negative exponent is translated as follows:

so, we have

the expected value of the random variable : 0, 1 and 2

step-by-step explanation: