Hello,Originally Posted bytotalnewbie

you know already the intersections between x-axis and curve:

(-2,0), (-1,0), (1,0).

Now you need the slope of the tangent lines:

Your function is

The gradient of the function gives the slope of the tangents:

First slope:

2nd slope:

3rd slope:

Now use the point-slope-formula and you'll get:

Greetings

EB