What is the solution of the equation x^2-1=0

2 answers
Question:

what is the solution of the equation x^2-1=0

Answers

x^2 - 1 = 0x^2 -1^2 = 0(x + 1) (x - 1)  = 0x + 1 = 0 or x - 1 = 0x = -1 or x = 1Ans: -1 and 1

(x^2 - 1) factors. This is a basic factoring procedure. Make sure you know itSolve it like this x^2 - a^2 = (x + a)(x - a)so for x^2 - 1 you get(x + sqrt(1) )  (x - sqrt(1) = (x + 1)(x-1) x^2 - 1 = (x + 1)(x - 1)(x - 1)(x + 1) =0x - 1 =0x = 1x + 1 = 0x = - 1The two answers are x = 1 and x = - 1You might want to try these. If you post the answers, I'll tell you how you did. Just make commentsx^2 - 25 = 0x^2 - 9 =0x^2 - 36 = 0x^2 - 49 = 0

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