Algo and Math

x⁴ -1=x²+1 x=?

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x⁴ -1=x²+1 x=?

x⁴ -1- (x²+1) = 0
(x²+1)(x²-1) - (x²+1) =0
(x²+1) (x²-2) =0
se siamo in R:
x= ±√2
se siamo in C:
x= ±√2
x= ±i
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pasquale.clarizio

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