Question

F(x)= x2 - 2x, find f(5)=[ ]

Answer 1

15

Explanation:

In order to find the answer, substitute the x values with the number five as suggested.

5^2 + 2(5)

5^2 or 5 x 5 is 25, thus giving us the first constant.

2(5) or 2 x 5 is 10, which gives us the second constant.

Now, you need to subtract the two constants; 25 - 10.

Thus, giving you the final answer of 15.

Hope this helps!