Question

Help please,
best answer given,
screenshot in comments.

Answer 1

1) -15*1 because 1 is the coefficient of x^2.
2) which factors of -15=-2?
3) -3, 5. So, x^2-2x-15= (x-3)(x+5)
4) what can make this=0?
5) x=3, x=-5.

Answer 2

That makes sense, thank you very much!

Answer 3

wait wait wait x^2-2x-15 should be (x-5)(x+3) instead so the ans should be....

Answer 4

Oh ya! sorry!

Answer 5

They are right

Answer 6

Wait so which is the answer? :( I'm sorry I'm now confused

Answer 7

-3 and 5

Answer 8

AGHH sorry -5 and 3