Multiply (4x^3+9)(3x^2+7x+5)

12x^5 +28X^4 + 20x^3 + 27x^2 + 63x + 45

Step-by-step explanation:

(4x^3)(3x^2) + (4x^3)(7x) + (4x^3)(5) + (9)(3x^2) + (9)(7x) + (9)(5) =

12x^5 +28X^4 + 20x^3 + 27x^2 + 63x + 45

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x