princesskimmie31
princesskimmie31 princesskimmie31
  • 07-05-2020
  • Mathematics
contestada

PLEASEEEE ANSWER ASAP

PLEASEEEE ANSWER ASAP class=

Respuesta :

xxamari
xxamari xxamari
  • 10-05-2020

Answer:

x = -1, x = 1

Step-by-step explanation:

Factor the equation. (It's a difference of squares, so we know the form will be (a-b)(a+b).)

[tex]y = x^{2} - 1\\y = (x-1)(x+1)[/tex]

Test this by FOILing it out, if you're unsure. This is something it can be good to memorize!

Set it equal to 0.

[tex]0 = (x+1)(x-1)[/tex]

Separate the two parenthetical expressions by the Zero Product Property.

[tex]0 = x+1\\0 = x-1[/tex]

Solve for x!

[tex]x=-1, x=1[/tex]

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