Question

Fan +Medal help with factoring x^2-x-72

Answer 1

x^2-x-72
=x^2-9x+8x-72
x(x-9)+8(x-9)
(x-9)(x+8)

Answer 2

still cconfused

Answer 3

Ok do you know how to factor?

Answer 4

(x+8)(x-9)

Answer 5

@baby456 do you need more explanation?

Answer 6

yes

Answer 7

look at the middle section
realise that -x is the same as -9x+8x
do you get that part? @baby456

Answer 8

no

Answer 9

then try thinking of it without the x
-1 = -9+8
now do you understand?
@baby456