X(x – 4) and x2 - 4x define the same function.

Yes, because is equivalent to

Step-by-step explanation:

and

Hope this helps!

Positive numbers are greater than zero.

If you think of a number line, you can visualize positive numbers as a certain number of steps taken starting from zero and walking right.

The opposite of a positive number means to take the same number of step, but this time you're walking to the left.

For example, the number 12 means that you have to take 12 steps to the right starting from 0, and its opposite -12 means that you have to take 12 steps to the left starting from 0.

So, the opposite of a positive number will always sit on the left of zero, which means that it is less than zero, which means that it's negative.

So, the opposite of a positive number can never be positive.