Question

Restrangeti ecuatia x patrat+4x+3 (utilizand formula).

Answer 1

$x^2+4x+3= \\ \\ =x^2+x+3x+3= \\ \\ =x(x+1)+3(x+1)= \\ \\ =(x+1)(x+3)$

Answer 2

x2+4x+3=

=x2+x+3x+3=

=x(x+1)+3(x+1)=

=(x+1) (x+3