Question

How many real roots describe the given polynomial function?
f(x) = 8x3 - 2x2 - 15x

Answer 1

3

Answer 2

thank you? :-) @desi0954

Answer 3

Of course you could care less how the answer was obtained?!?

Answer 4

its 3 because the largest exponent in the equation is 3

Answer 5

@desi0954 That doesn't mean it will have 3 real roots. Some of the roots could be imaginary.

Answer 6

She said "real roots"

Answer 7

Oh idk thats how I learned it. Sorry

Answer 8

It actually is 3 real roots though, because it actually does factor into
x(2x-3)(4x+5)....but it doesn't always work out that way