In the diagram below, OP is circumscribed about quadrilateral ABCD. What is
the value of x?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle