Dati factor comun:
A)3a+9b
B)3a+6b
C)2a+4b
D)5x+10y
E)5x+15y
F)4a+8b
G)3a-12b
H)2a-6b+5

Va rooooog dau coroana!!!

[tex]a)3a + 9b = 3( \frac{3a}{3} + \frac{9b}{3}) = 3(a + 3b) [/tex]

[tex]b)3a + 6b = 3( \frac{3a}{3} + \frac{6b}{3}) = 3(a + 2b) [/tex]

[tex]c)2a + 4b = 2( \frac{2a}{2} + \frac{4b}{2}) = 2(a + 2b) [/tex]

[tex]d)5x + 10y = 5( \frac{5x}{5} + \frac{10y}{5}) = 5(x + 2y) [/tex]

[tex]e)5x + 15y = 5( \frac{5x}{5} + \frac{15y}{5}) = 5(x + 3y) [/tex]

[tex]f)4a + 8b = 4( \frac{4a}{4} + \frac{8b}{4}) = 4(a + 2b) [/tex]

[tex]g)3a - 12b = 3( \frac{3a}{3} + \frac{ - 12b}{3}) = 3(a - 4b) [/tex]