"Use synthetic substitution to find f (-2) and f (3)"
1) f (x) = x^2 - 2x + 6
2) f(x) = x^3 - 6x - 5
please please help me & I will return the favor. This is for my Math 3 class, we are doing Polynomials

Question

"Use synthetic substitution to find f (-2) and f (3)"
1) f (x) = x^2 - 2x + 6
2) f(x) = x^3 - 6x - 5
please please help me & I will return the favor. This is for my Math 3 class, we are doing Polynomials

anonymous · Answer

it is almost impossible to write synthetic division here although i have seen some attempt at it
you don't need it however, since 
$$f(-2)=(-2)^2-2\times(-2)+6$$ and 
$$f(3)=3^2-2\times 3+6$$ and both of those are easy to compute

anonymous · Answer

Thank you for much for replying! 
Once I substitute the given numbers into the equation, can this be solved with a calculator?

anonymous · Answer

yes although pencil and paper will work as well
none of this arithmetic is very hard

anonymous · Answer

as a matter of fact you can do much of it  in your head 
$$(-2)^2-2\times (-5)+5=4+4+5=...$$not much to that one

anonymous · Answer

Thank you very much! Your answers were very helpful. I was over-thinking the process, I thought it was more complicated.