Question

rezolvati va rog frumos aceste exercitii
dau 20 de puncte
1) a^2-k^2=
2) (2-m)(2+m)=
3) 9a^2-6a+1=
4) (x-3)(x+3)=
5) (x-3)^2=
6) x^+10x+25=

Answer 1

1) (a+k)(a-k)
2) 4- m^2
3) (3a-1) ^2
4) x^2 -9
5) x^2-6x+9
6)(x+5)^2