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**General Science / Re: Can you derive x = -1 from x^2 = 1?**

« **on:**29/01/2021 19:21:50 »

x

x

(x+1)(x–1) = 0

x = 1 and x = –1 both satisfy the last equation

^{2}= 1x

^{2}– 1 = 0(x+1)(x–1) = 0

x = 1 and x = –1 both satisfy the last equation