Is 20 prime or composite tell me the factors

Composite and the factors are 2 , 2 and 5

Step-by-step explanation:

Finding the prime factors:

20 / 2 = 10

10 / 2 = 5 so they are 2, 2 and 5

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

this is answer of 144 cubic meters