Respuesta :

1.(x^2+8x+15) 
15: 3x5 8: 5+3 
15: 1x15 
x^2+8x+15 = (x+3)(x+5) 

2.x^2-16 = (x-4)(x+4) 
3.2x+6 = 2(x+3) 


(((x+3)(x+5))/(x-4)) x ((x-4)(x+4))/(2(x+3)) R: (x+4)/(x+4) = 1 
((x+3)(x+5)) x ((x+4)/(2(x+3) R: (x+3)/(x+3) = 1 
(x+5) x (x+4)/2 

Answer: (x+5)(x+4)/2 

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