Question

How do i find the coefficient of x in the expression 9x squared -2x -1?

Answer 1

`-2`

Explanation:

We have the expression

`9x^2-2x-1`

The coefficient of `x` is just the constant in front of the `x` term. Notice, we are not talking about the `x^2` term, but the `x` term.

`9x^2color(slateblue)(-2x)-1`

We see that our `x` term is `color(slateblue)(-2x)`, and the constant in front of it is `-2`. This is our coefficient on the `x` term.

Hope this helps!