Question

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

Answer 1

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)

Answer 2

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)