Where are the zeros and what is the value of x between [-1,1]?

[assman]

5x^3 - 2x^2 + 3

Where are the zeros. Is there one between [-1,1]

THanks.

 

[UrbanXrisis]

There is a zero at (-0.7860031,0)

 

[Justin Lazear]

Evaluate the expression at x = -1 and x = 1.

What are the signs of the expression at these two points? What does this tell you about whether or not there is at least one root between them (hint: plot the two points and draw a line through them. Does it cross 0?) ?

--J

 

[dduardo]

UrbanXrisis, that is the wrong answer.

 

[UrbanXrisis]

ACK! Sorry! (-0.7290014,0) Typed in the wrong answer

 

[Tom McCurdy]

The easiest way to solve that for you might be to graph the equation. Then limit you window from in the x from -2 to 2 then see if it crosses the axis between -1 and 1... zoom out to see all the zeros if more exist.

 

[Raza]

I think x would -0.92 if it is like this
5x^3 - 2x^2 + 3=0