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What is the value saved in the variable names var?
a = 2
b = -1
c = -1
var = (-b + (b**2 - 4*a*c)**1/2)/2*a
/!\ Decimal are written with a dot (.) not a comma (,)Give your answer in decimal form, not as a fraction (ex: 0.25 rather than 1/4)
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