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giải bpt,pt sau
[tex] 4x^2 +3^{\sqrt{x}}.x+3^{\sqrt{x}+1} <2x^2. 3^{\sqrt{x}}+2x+6 [/tex]
[tex]cos2x - {\sqrt{3}}.sin2x - {\sqrt{3}}.sinx -cosx +4=0[/tex]
[tex] 4x^2 +3^{\sqrt{x}}.x+3^{\sqrt{x}+1} <2x^2. 3^{\sqrt{x}}+2x+6 [/tex]
[tex]cos2x - {\sqrt{3}}.sin2x - {\sqrt{3}}.sinx -cosx +4=0[/tex]