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Ajutorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr


Ajutorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr class=

Răspuns :

Răspuns:

E(x)= 4[tex]x^{2}[/tex] +12x+ 9 - ([tex]x^{2}[/tex] +7x - 3x - 21) - 2*( [tex]x^{2}[/tex]- 4x+2)=

4[tex]x^{2}[/tex] +12x+9 - [tex]x^{2}[/tex] -4x +21 - 2[tex]x^{2}[/tex] +8x-4= [tex]x^{2}[/tex] +16x +36

E(x)= [tex]x^{2}[/tex] +16x +36

E(0)= 0+16*0+36= 36

E(-2)= 4-16*2+36= 40-32=8

E(-3)=9-16*3+36= 45-48= -3