# How do you use the quadratic formula to solve #2.5x^2-2.8x=0.4#?

##### 1 Answer

See a solution process below:

#### Explanation:

First, subtract

Now we can use the quadratic equation to solve this problem:

The quadratic formula states:

For

Substituting:

Aug 20, 2017

See a solution process below:

First, subtract

Now we can use the quadratic equation to solve this problem:

The quadratic formula states:

For

Substituting: