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Lucalarisa46
a fost răspuns

Fie expresia E(x)=( 2x-1)² - 2(2x-1)(x+1)+(x+1)²
a) Aduceti expresia la o forma mai simpla
b) Calculati E(0)

Răspuns :

[tex]a)E(x)=(2x-1)^2-2(2x-1)(x+1)+(x+1)^2\\ E(x)=[(2x-1)-(x-1)]^2\\ E(x)=(2x-1-x+1)^2\\ E(x)=x^2\\ b)E(0)=0^2=0[/tex]