👤

nu am inteles cum se rezolva ajutatima va rog macar cu una,nu le stiu face multumesc

Nu Am Inteles Cum Se Rezolva Ajutatima Va Rog Macar Cu Unanu Le Stiu Face Multumesc class=

Răspuns :

8.a) 5x(x+2)+(x+2)(x+2)-3(x+2)
e clar a x+2 e in toti termenii si dai factor comun pe x+2
(x+2)(5x+(x+2)-3)


a) 5x(x+2)+(x+2)²-3(x+2)=

(x+2)[5x+(x+2)-3]=

(x+2)(6x-1)

b) (x+1)(x+2)+4(x+1)²-4x(x+1)=

(x+1)[(x+2)+4(x+1)-4x]=

(x+1)(x+2+4x+4-4x)=

(x+1)(x+6)

c) (x+2)(3x-7)-(x+2)(4x-2)+3(x+2)

(x+2)[(3x-7)-(4x-2)+3]=

(x+2)(3x-7-4x+2+3)=

(x+2)(-x-2)

d) (2x-1)²-(3x+2)(2x-1)+6x(2x-1)=

(2x-1)[(2x-1)-(3x+2)+6x]=

(2x-1)(2x-1-3x-2+6x)=

(2x-1)(5x-3)

e) (5x-4)(3x-2)²-(3x-2)³+2(x+4)(3x-2)²=

(3x-2)²[(5x-4)-(3x-2)+2(x+4)]=

(3x-2)²(5x-4-3x+2+2x+8)=

(3x-2)²(4x+6)