SOLUTION: f(-x)=x^2+8x+1 not sure how to apply the negative variable -x times x^2 = -x^2 or -x^3? -x times 8x = 7x? or -8x?

Algebra ->  Rational-functions -> SOLUTION: f(-x)=x^2+8x+1 not sure how to apply the negative variable -x times x^2 = -x^2 or -x^3? -x times 8x = 7x? or -8x?      Log On


   

Question 489970: f(-x)=x^2+8x+1
not sure how to apply the negative variable -x times x^2 = -x^2 or -x^3?
-x times 8x = 7x? or -8x?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
f(-x)=x^2+8x+1
**
replacing x with (-x)
f(-x)=(-x)^2+8(-x)+1
f(-x)=x^2-8x+1