Question

rezolvarea:x(x-4+x)=

Answer 1

x(x-4+x) = x la patrat-4x+x la patrat = 2x la patrat-4x = 2x(x-2)

Answer 2

1)Daca x(x-4+x)=x -> x(x-4+x)-x=0 -> x(x-4+x-1)=0 -> x(2x-5)=0   ->>>>x=0 si  2x-5=0->2x=5 ->x =5/2  
2)Daca x(x-4+x)=0 -> x=0 si x-4+x=0 =>2x-4=0 ->2x=4 ->x=2