Square root of 4x squared times square root of 20x squared

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Consider the polynomials given below. p(x) = x4 + 3x3 + 2x2 – x + 2 q(x) = (x3 + 2x2 + 3)(x2 – 2) determine the operation that results in the simplified expression below. 35 + x4 – 573 - 3x2 + x - 8 a. p+q b. pq c.q-p d. p-q

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq