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1-x^2-4*x+2=0
var('x')
solve(x^2-4*x+2==0,x)
2-6*x^2-5*x-6=0
solve(6*x^2-5*x-6==0,x)
3-9*x^2-6*x+10=0
solve(9*x^2-6*x+10==0,x)