Question

How many roots does the polynomial function
y=(x-8)(x+3)^2 have?
A. 2
B. 3
C. 1
D. 4

Answer 1

Let P(x) = 5x3 − 4x2 + 7x − 8. Then a root of that polynomial is 1 :
P(1) = 5· 13 − 4· 12 + 7· 1 − 8

= 5 − 4 + 7 − 8

= 0.
thats how u do it

Answer 2

but not the answer

Answer 3

Ok..

Answer 4

this is a cubic equation ( x^3) and will have 3 roots

Answer 5

This is the Fundamental Theorem of Algebra.

Answer 6

its 2 so its A

Answer 7

- that's not strictly true because 3 is a double root (x +3)^2

Answer 8

im just telling you what it told me

Answer 9

yes ok