Question

How do you solve `25x^2-30x=-9`?

Answer 1

`x=3/5`

Explanation:

Once you put all of the terms of the quadratic on one side of the equation, then you get a perfect square trinomial:

Add `9` to both sides to get:

`0 = 25x^2-30x+9`

`=(5x)^2-2(5x)(3)+3^2`

`=(5x-3)^2`

So `x = 3/5`