Question

Is it possible to factor `y=x^2-21x`? If so, what are the factors?

Answer 1

See a solution process below:

Explanation:

It is possible to factor this equation. An `color(red)(x)` can be factored from each term on the right side of the equation:

`y = (color(red)(x) * x) - (color(red)(x) * 21)`

`y = color(red)(x)(x - 21)`