Question

Rezolvati va rog frumos aceste exercitii
dau coroana si folow
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

Răspuns:

1. (a-k)( a+k)

2. 4-2m+2m- m²= 4-m²

3. (3a-1)²

4. x²-3x+3x-9= x²-9

5. x²-6x +9

6. (x+5)²

folosesti formule de calcul prescurtat