Question

Using complete sentences, explain how to find the zeros of the function f(x) = 2x^3 - 9x + 3.

Answer 1

Facoring if possible.
Completing the Square or the Quadratic Formula, otherwise.

Answer 2

can you show me how to do it?

Answer 3

You've probably done it 100 times, already.

Solve this for x: x + 2 = 0

Answer 4

Try this one: \(x^{2} - 1 = 0\)

Answer 5

How about this one: \(x^{2} - 4x + 4 = 0\)

Answer 6

Here's how:

Go to http://wolframalpha.com and type out `2x^3 - 9x + 3 = 0`. Scroll down to see the result.

Answer 7

You've been studying factoring and the Quadratic Formula. Now is the time to use these skills and tools!

Answer 8

(2.*(x+2.271633299))*(x-.3422414369)*(x-1.929391862)

Answer 9

so you factor to get
(2.*(x+2.271633299))*(x-.3422414369)*(x-1.929391862)=0
get rid of 2 by dividing
(x+2.271633299)*(x-.3422414369)*(x-1.929391862)=0

Then you just solve individually
(x+2.271633299)=0 -> x=-2.27...
(x-.3422414369)=0 -> x= .34...
(x-1.929391862)=0 -> x=1.92...

Answer 10

Is it really \(x^{3}\) and not \(x^{2}\)?

Answer 11

i think it may be x^2