SOLUTION: Determine whether the given number is a zero of the polynomial function.
11) P(x) = 8x3 + 9x2 + x + 138; -3
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Question 127364This question is from textbook College Algebra
: Determine whether the given number is a zero of the polynomial function.
11) P(x) = 8x3 + 9x2 + x + 138; -3
This question is from textbook College Algebra
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Just replace x with -3 and see if P(-3)=0
P(x) = 8x^3 + 9x^2 + x + 138
P(-3) = 8*(-3)^3 + 9*(-3)^2 -3 + 138
=8*-27+9*9-3+138
=-216+81-3+138
=0
.
Yes -3 is a zero of P(x)
.
Ed
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