Question

Dati factor comun:
1.a^2+2a
2.b^3+2ab
3.b^4+3b^3+2b^2+3b
4.5n^2+6n
5.7k^5+8k^4+6k^3


^=la puterea a .....

Answer 1

1.a^2+2a=a(a+2)
2.b^3+2ab=b(b^2+2a)
3.b^4+3b^3+2b^2+3b=b(b^3+3b^2+2b+3)
4.5n^2+6n=n(5n+6)
5.7k^5+8k^4+6k^3=k^3(7k^2+8k+6)