,

Rewrite as .

Pull terms out from under the radical, assuming positive real numbers.

Use the distance formula to determine the distance between the two points.

Substitute the actual values of the points into the distance formula.

Subtract from .

Raise to the power of .

Subtract from .

Raise to the power of .

Add and .

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

Find the Distance Between Two Points ( square root of 4,2) , (7,1)