Question

factor x² - 16x + 15

Answer 1

x²-16x+15=(x+a)(x+b).

Look for a and b, where a+b=-16 and ab=15

Answer 2

Hint: they are both negative...

Answer 3

-1 and -15 are the only one that equal 16

Answer 4

Yes!

-1 + -15 = -16 >>> OK
-1 * -15 = 15 >>>OK

So x²-16x+15=(x-1)(x-15).

Answer 5

so I was right

Answer 6

You were...

Answer 7

Although you wrote 16 instead of -16 :)