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AndreiAbel
a fost răspuns

(X+2)^2 +(x-3)^2 -(x+1)×(x-1) =???

Răspuns :

[tex]( x+2)^{2} +( x-3)^{2} -(x+1)(x-1)[/tex][tex]=\ \textgreater \ x^{2} +4x+4+ x^{2} -6x+9-( x^{2} -1)[/tex][tex]=\ \textgreater \ x^{2} +4x+4+ x^{2} -6x+9- x^{2} +1=\ \textgreater \ -2x+14+ x^{2} [/tex]
[tex]Succes[/tex]

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