f(x) = −7x^3 + 44x^2 − 68x + 16
1.Use Descartes's Rule of Signs to determine the possible numbers of positive real zeros of f.
2.Use Descartes's Rule of Signs to determine the possible numbers of negative real zeros of f.
3.Use the Rational Zero Test to create a list of all the possible rational zeros of f.
4.Determine all the real zeros of f.

Question

f(x) = −7x^3 + 44x^2 − 68x + 16 
1.Use Descartes's Rule of Signs to determine the possible numbers of positive real zeros of f.
2.Use Descartes's Rule of Signs to determine the possible numbers of negative real zeros of f.
3.Use the Rational Zero Test to create a list of all the possible rational zeros of f.
4.Determine all the real zeros of f.

jdoe0001 · Answer

http://www.youtube.com/watch?v=GTx-rXTQg1o

anonymous · Answer

how many "changes in sign" for 
$$ −7x^3 + 44x^2 − 68x + 16 $$?

anonymous · Answer

or let me ask it this way
is it clear what "changes in sign"  means?