Question

1) State the x-coordinate of the x-intercept in quadrant II for the function below: f(x)=4x^3-12x^2-x+15

Answer 1

You want to first find all x intercepts and then figure out which is in the second quadrant.

Therefore: Solve for when f(x) = 0 and then get your roots.

Answer 2

can you solve it step by step? i honestly don't know how to do it all and i really need to get it right

Answer 3

...

f(x)=0
0=4x^3-12x^2-x+15

x = -1, 1.5, and 2.5

The last two are both positive and therefore aren't in the "second quadrant." Which is a stupid idea because the axis aren't in quadrants but rather are boundaries. But basically x = -1 is on the boundary and therefore would be your answer.