1) [tex]x(x+5)- x^{2}\leq15 [/tex]
2) [tex]3x(2-x)\ \textgreater \ 12-3x^{2} [/tex]
3) [tex](x-4)(x+3)-5\ \textless \ x(x+16)[/tex]
4) [tex] x^{2}(6-x)+ x^{3}\geq2x(3x+4)-24 [/tex]
5) [tex] x^{3}(3-2x)+ x^{2}(x+ 2x^{2})\ \textgreater \ 4x( x^{2} -3)+12 [/tex]
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