Question

(x + 1)(x - 1)
I dont understand this could any1 help me

Answer 1

Answer:

x^2-1

Step-by-step explanation:

you must use the distributive property

first you do x•x=x^2,

then you do x•1 and x•-1 to get x and -x and those cancel out,

the you do 1•-1=-1, then you put it together to get x^2-1

Answer 2

Step-by-step explanation:

It's a factored form of the quadratic equation

${x}^{2} - 1$

in the form of ${ax}^{2} + bx + c$

in which a = 1, b = 0, c = 1.