Aquadrilateral that is equiangular but not equalilateral

A rectangle  

Step-by-step explanation:

The sum of the interior angles of a polygon with n sides is 180(n – 2)°.

A quadrilateral has four sides, so n = 4.

Sum of interior angles = 180(4 - 2)° = 180(2)° = 360°

If the quadrilateral is equiangular,

Each interior angle = 360/4 = 90°

The quadrilateral is not equilateral, so it must be a rectangle.

C: isolate the x squared by using inverse operations

Step-by-step explanation:

This method of solving quadratic equation is used when there is only x² term and no x term. Thus;

For example, we have a quadratic equation;

x² - 1 = 80

To solve this by square root method, the first step we have to take is to isolate the x² term by inverse operation which is by addition of 1 to both sides to get rid of the -1 on the left side so that x² can be isolated.