👤
a fost răspuns

E(x)= 2(x+2) la puterea a2 -(x+3) (x+5) +8
Aratati ca E(x)= x la a2 +2 urgent va rogggg

Răspuns :

E(x)=2(x la patrat +4x +4)-(x la patrat+5x+3x+15)+8
E(x)=2xla patrat +8x+8-x la patrat-5x-3x-15+8
E(x)=x la patrat+1
[tex]E(x)=2(x+2)^2-(x+3)(x+5)+8\\ E(x)=2(x^2+2x2+2^2)-(x^2+5x+3x+15)+8\\ E(x)=2x^2+8x+8-x^2-8x-15+8\\ (reducem~termenii...si~avem)\\ E(x)=x^2+1[/tex]

Alte intrebari