Question

How do you find the product `(2x-5)^2`?

Answer 1

See a solution process below:

Explanation:

This is a special form of a quadratic which uses the formula:

`(a - b)^2 = a^2 - 2ab + b^2`

Substituting `2x` for `a` and `5` for `b` gives:

`(2x - 5)^2 = (2x)^2 - 2(2x)5 + 5^2 =`

`4x^2 - 20x + 25`