Question

Ajutati-ma!!!
A.X²+3x+2
B.x²+5x+6
C.x²+4x+3
D.x²+6x++8
E.x²+8x+15
F.x²+7x+6
G.x²+10x+21
H.x²+9x+20

Answer 1

A. x²+3x+2=x²+2x+x+2=x(x+2)+(x+2)=(x+2)(x+1)
B. x²+5x+6=x²+3x+2x+6=x(x+3)+2(x+3)=(x+3)(x+2)
C. x²+4x+3=x²+3x+x+3=x(x+3)+(x+3)=(x+3)(x+1)
D. x²+6x+8=x²+4x+2x+8=x(x+4)+2(x+4)=(x+4)(x+2)
E. x²+8x+15=x²+3x+5x+15=x(x+3)+5(x+3)=(x+3)(x+5)
F. x²+7x+6=x²+6x+x+6=x(x+6)+(x+6)=(x+6)(x+1)
G. x²+10x+21=x²+7x+3x+21=x(x+7)+3(x+7)=(x+7)(x+3)
H. x²+9x+20=x²+4x+5x+20=x(x+4)+5(x+4)=(x+4)(x+5)

Answer 2

A. x^2+3x+2 = x^2+x+2x+2 = x(x+1)+2(x+1) = (x+1)(x+2).

B. x^2+5x+6 = x^2+3x+2x+6 = x(x+3)+2(x+3) = (x+3)(x+2).

C. x^2+4x+3 = x^2+x+3x+3 = x(x+1)+3(x+1) = (x+1)(x+3).

D. x^2+6x+8 = x^2+4x+2x+8 = x(x+4)+2(x+4) = (x+4)(x+2).

E. x^2+8x+15 = x^2+3x+5x+15 = x(x+3)+5(x+3) = (x+3)(x+5).

F. x^2+7x+6 = x^2+x+6x+6 = x(x+1)+6(x+1) = (x+1)(x+6).

G. x^2+10x+21 = x^2+3x+7x+21 = x(x+3)+7(x+3) = (x+3)(x+7).

H. x^2+9x+20 = x^2+4x+5x+20 = x(x+4)+5(x+4) = (x+4)(x+5).






J'espère aidé :)