SOLUTION: I hope this is the right category for the problem I need help with. It states to find the value for the function and the question is: Find f(2) when F(x) = *x2-5 over x+3

Algebra ->  Rational-functions -> SOLUTION: I hope this is the right category for the problem I need help with. It states to find the value for the function and the question is: Find f(2) when F(x) = *x2-5 over x+3       Log On


   

Question 48378This question is from textbook
: I hope this is the right category for the problem I need help with. It states to find the value for the function and the question is:
Find f(2) when F(x) = *x2-5 over x+3


* x2 in this case represents x squared (Can't find the symbol used in the above example). From other homework, my solution is to place the equation as: x2-5 = x+3 (2) and solve from there, only multiplying the dominator by the function of x. I come up with
x2-2x-11=0 is the quadratic formula necessary to figure x. Please provide help!
This question is not from a textbook, but I did put in the barcode of textbook used. This question is from textbook

Found 2 solutions by Nate, Earlsdon:
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = (x^2 - 5)/(x + 3)
f(2) = (2^2 - 5)/(2 + 3) = (4 - 5)/(2 + 3) = -1/5
Also, this shows when x+=+2 for the graph of y+=+%28x%5E2+-+5%29%2F%28x+%2B+3%29, y+=+-1%2F5.
graph%28600%2C600%2C-10%2C10%2C-10%2C10%2C%28x%5E2+-+5%29%2F%28x+%2B+3%29%29

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Given:
f%28x%29+=+%28x%5E2-5%29%2F%28x%2B3%29 Find f(2): All you have to do is replace the x in the first function with 2.
f%282%29+=+%282%5E2-5%29%2F%282%2B3%29 Simplify.
f%282%29+=+%284-5%29%2F5
f%282%29+=+-1%2F5
P.S. Use the caret symbol (^) to indicate raising to a power.
x-squared would be entered as x^2