Question

Factor -x^2 + 1

Answer 1

-(x-1) (x+1)

Answer 2

This is the same as 1 - x^2
Difference of two squares
1 - x^2 = (1 - x)(1 + x)

Answer 3

okay so we ignore the negative

Answer 4

(1 - x)(1 + x) = -(x-1) (x+1)

Answer 5

What pathosdebater did was this: -x^2 + 1 = -1(x^2 - 1)
= -1(x + 1)(x - 1)

Answer 6

oh okay yeah thank you the negative sign just threw me off lol

Answer 7

Thus -1(x + 1)(x - 1) = (x + 1)(1 - x)
= (1 + x)(1 - x)