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se considera expresia E(x)=4/x-2÷(x+3)^2-(x+1)^2/x^2-4​

Răspuns :

[tex]e(x)=\frac{4}{x-2}:\frac{(x+3)^2-(x+1)^2}{x^2-4}[/tex]

//[tex](x+3)^{2}=x^{2} +6x+9[/tex]

//[tex](x+1)^{2} =x^{2} +2x+1[/tex]

[tex]\frac{4}{x-2} *\frac{(x-2)(x+2)}{x^{2} +6x+9-x^{2} -2x-1}[/tex]

[tex]\frac{4(x+2)}{4x+8} =\frac{4(x+2)}{4(x+2)} =\frac{4}{4} =1[/tex]