Question

Como resolver a conta (x^2-1) . (-x^2+4) . (X^2+x+4) < 0

Answer 1

$(x^{2-1})( -x^{2+4} )( x^{2+x+4} ) \ \textless \ 0 \\ x(- x^{6}) x^{6+x}\ \textless \ 0 \\ -x^{x+13}\ \textless \ 0$