SOLUTION: i am trying to reverse this equation back out. Expand it, if you know what i mean. Expand (2x-3)^5 . i know its something simple but i just cant get it.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: i am trying to reverse this equation back out. Expand it, if you know what i mean. Expand (2x-3)^5 . i know its something simple but i just cant get it.      Log On


   

Question 84800: i am trying to reverse this equation back out. Expand it, if you know what i mean. Expand (2x-3)^5 . i know its something simple but i just cant get it.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Using the general binomial %28x%2By%29%5E5 we can use binomial expansion to get


Now substitute x=2x and y=-3



Now simplify


32%2Ax%5E5%2B-240%2Ax%5E4%2B720%2Ax%5E3%2B-1080%2Ax%5E2%2B810%2Ax%2B-243