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After solve(...) I get

x = (2/9sqrt(3)sqrt(1355) - 611/27)^(1/3) + 61/9/(2/9sqrt(3)sqrt(1355) - 611/27)^(1/3) - 8/3

Now how to show this as decimal? float(x) and R = RealField(50); R(x) doesn't seem to work.

After solve(...) I get

x = (2/9sqrt(3)sqrt(1355) (2/9*sqrt(3)*sqrt(1355) - 611/27)^(1/3) + 61/9/(2/9sqrt(3)sqrt(1355) 61/9/(2/9*sqrt(3)*sqrt(1355) - 611/27)^(1/3) - 8/3

Now how to show this as decimal? float(x) and R = RealField(50); R(x) doesn't seem to work.

After solve(...) solve( x^3+8*x^2+x+10 , x ) I get

x = (2/9*sqrt(3)*sqrt(1355) - 611/27)^(1/3) + 61/9/(2/9*sqrt(3)*sqrt(1355) - 611/27)^(1/3) - 8/3

Now how to show this as decimal? float(x) and R = RealField(50); R(x) doesn't seem to work.