Rewrite the equation as .

Multiply each term in by

Multiply each term in by .

Simplify .

Apply the distributive property.

Multiply by .

Apply the distributive property.

Multiply .

Multiply by .

Multiply by .

Multiply by .

Simplify .

Move to the left of .

Rewrite as .

Subtract from both sides of the equation.

Use the vertex form, , to determine the values of , , and .

Find the vertex .

Find the distance from the vertex to a focus of the parabola by using the following formula.

Substitute the value of into the formula.

Cancel the common factor of and .

Rewrite as .

Move the negative in front of the fraction.

The focus of a parabola can be found by adding to the y-coordinate if the parabola opens up or down.

Substitute the known values of , , and into the formula and simplify.

Find the Focus (x-2)^2=-(y+1)