👤

Descompuneti in factori expresia: E(x)= x la puterea 3 - 7x la puterea 2 + 12x

Răspuns :

E = x · ( x² - 7x  + 12 ) = x· ( x²  -4x  - 3x +12 ) = x· ( x -4 ) · ( x - 3 ) 
E(x)=x(x²-7x+12)=x(x²-3x-4x+12)=x[x(x-3)-4(x-3)]=x(x-3)(x-4)