👤

descompuneti :12 (x+3)^2-6x (x+3)

va rog repede!!!


Răspuns :

12(x^2+6x+9)-6x(x+3)
12x^2+72x+9-6x^2-18x
6x^2+64x+9
12(x™+6x+9)-6x™-18x=
12x™+72x+111-6x™-18x=
6x™+64x+111
™=la puterea a doua