Factor the trinomial x2 - 6x - 16?

Answer 1

(x+4)(x-4)

How you do it:

See the x squared? Well put one of each in a set of parentheses, so far u have (x)(x)

Then, see the -16? Well what times what equals -16? (If multiply the square root twice do so) So let's use 4 and -4 (a negative times a positive equals a negative 16)

Put a four in each parentheses (doesn't matter which goes where) Now you have

(x+4)(x-4)

There you go!