Question

What am I doing wrong?

Answer 1

Using ONLY (f(x)-f(a))/(x-a)

So the x^3 factors to (x-2)(x+1)^2

Answer 2

The x-2 cancels top and bottom

Answer 3

Leaving (x+1)^2

putting in 2 for x gives 9!

Answer 4

right, slope = 9

Answer 5

but the question is asking you to find the equation of tangent line right ?

Answer 6

Man I'm dumb

Answer 7

So y-3=9(x-2)

Answer 8

yes, send that 3 to the other side

Answer 9

and simplify if the grader cries again..

Answer 10

Thanks man

Answer 11

yw