SOLUTION: If f(2-3x)=2x³+3x²-5x-7,find the value of f(-1)

f(2-3x) will equal f(-1) if and only if what's in the parentheses 
after the f's are equal to each other.  So we set them equal to
each other and solve for what x must be for them to be equal:


2-3x = -1
 -3x = -1-2
  -3x = -3
    x = 1

So we substitute 1 for x in

 









Edwin