SOLUTION: Find the value of yhe polynomial 3 2 - 4x +4x -x+48 when x= 2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find the value of yhe polynomial 3 2 - 4x +4x -x+48 when x= 2      Log On


   

Question 154410: Find the value of yhe polynomial 3 2 -
4x +4x -x+48 when x= 2
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Note: use the caret symbol "^" to represent exponents. For example, x^2 ---> x%5E2. This way, you only need one line.




4x%5E3%2B4x%5E2-x%2B48 Start with the given equation.


4%282%29%5E3%2B4%282%29%5E2-2%2B48 Plug in x=2.


4%288%29%2B4%282%29%5E2-2%2B48 Cube 2 to get 8.


4%288%29%2B4%284%29-2%2B48 Square 2 to get 4.


32%2B4%284%29-2%2B48 Multiply 4 and 8 to get 32.


32%2B16-2%2B48 Multiply 4 and 4 to get 16.


94 Combine like terms.


So 4%282%29%5E3%2B4%282%29%5E2-2%2B48=94


So 4x%5E3%2B4x%5E2-x%2B48=94 when x=2