SOLUTION: Find the maximum number of real zeros for the equation f(x)=x^3+7x^2+8x-16

Question 1169630: Find the maximum number of real zeros for the equation f(x)=x^3+7x^2+8x-16

Found 2 solutions by josgarithmetic, MathLover1:
Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
Three at the most. (degree of the variable is 3).
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

.........factor completely, write asand as
...group
...factor out common

........use square of sum rule

real zeros are:

if =>
if => -> double root

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