SOLUTION: Been working on this one. Dont understand it. Evaluate the polynomial for x=4 2x^2-3x+3 If you could help me I would ge greatful Diane

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Been working on this one. Dont understand it. Evaluate the polynomial for x=4 2x^2-3x+3 If you could help me I would ge greatful Diane      Log On


   

Question 142944: Been working on this one. Dont understand it.
Evaluate the polynomial for x=4
2x^2-3x+3
If you could help me I would ge greatful
Diane
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=2x%5E2-3x%2B3 Start with the given function


f%284%29=2%284%29%5E2-3%284%29%2B3 Plug in x=4


f%284%29=2%2A16-3%2A4%2B3 Raise 4 to the 2nd power to get 16


f%284%29=32-3%2A4%2B3 Multiply 2 and 16 to get 32


f%284%29=32-12%2B3 Multiply 3 and 4 to get 12


f%284%29=20%2B3 Subtract 12 from 32 to get 20


f%284%29=23 Add 20 and 3 to get 23


So when x=4, then 2x%5E2-3x%2B3=23