SOLUTION: If f(y)=13y^4+5y^3–12y^2–18y–32, use synthetic division to find f(-1).

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Question 998816: If f(y)=13y^4+5y^3–12y^2–18y–32, use synthetic division to find f(-1).
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Why use synthetic division?
Why not just substitute -1 for y in the equation?
f%28y%29=13y%5E4%2B5y%5E3%9612y%5E2%9618y%9632
f%28-1%29=13%28-1%29%5E4%2B5%28-1%29%5E3%9612%28-1%29%5E2%9618%28-1%29%9632
f%28-1%29=13%281%29%2B5%28-1%29%9612%281%29%9618%28-1%29%9632
f%28-1%29=13-5%9612%2B18%9632
f%28-1%29=31-49
f%28-1%29=-18