Question

can you simplify x^2-1 to x(x-1)

it seems wrong to me because is you reverse it you'd get x^2-x

Answer 1

apply difference of square method
which is \[\huge\rm a^2 -b^2 =(a+b)(a-b)\]

Answer 2

x^2 -1 can't be x(x-1)
x is not common

Answer 3

okay thank you

Answer 4

np :)
so how would you simplify
x^2 -1 ?