If (2x-3) and (x+5) are multiplied to form the trinomial ax^2 +bx+c, what is the value of b

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

How many zeros does the function f(x)=4x3-x2+1 have