I will give medals!!
Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function.

f(x)= 2x^3 + 8x^2 + 7x - 8

Question

I will give medals!!
Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function.

f(x)= 2x^3 + 8x^2 + 7x - 8

wmj259 · Answer

Find possible factors of the leading coefficient for 2x^3.
Find possible factors for (-8)

wmj259 · Answer

chris215 · Answer

how do I do that? 
for -8 would it just be -1, 1, 2,-2, 4,-4,8,-8

wmj259 · Answer

yes
now do that for the 2 also.

chris215 · Answer

1,-1,2,-2? but what about the ^3 part?

perl · Answer

the rational roots theorem says
if f( p/q) = 0  , then p divides the last coefficient and q divides the first coefficient

perl · Answer

the last coefficient being the 'constant' term

perl · Answer

here p divides -8, and q divides 2

perl · Answer

so we can make a list of divisors for p , and q

wmj259 · Answer

@perl which we have.

perl · Answer

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