Factor the expression:
-\lambda ^{3}+4\lambda ^{2}+4\lambda -16

Step-by-step explanation:

What we want to fator is:

There is no common factor, but let's factor it by grouping. The first two addends can be factor as follows:

the second addends can be factor as well:

.

Then our original expression can be rewritten like

And here the is the common factor!

Finally, we can factor the quadratic expression as a difference of squares

Ant we get

now, we can extract the negative sign from , and we get

.

do i do it on a graph?

step-by-step explanation:

or