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Hello BP

error when interpreting '=' on python syntax

solve(a*x^2+b*x+c=0,x,'=') [enter] please use "..." for strings

solve(a*x^2+b*x+c=0,x,"=") [enter] fsolve(equal(a*x**2+b*x+c,0),x,"=")

Replace '=' by equal. It's difficult to guess what '' really means in Python syntax.

solve(a*x^2+b*x+c=0,x,equal) [enter] ok