2x^2=3x+10 completing the square

What does x = in this equation x+3+2x=x+5

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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