Respuesta :

Answer:

9d^2/(2d + 4).

Step-by-step explanation:

18d^2 /  (4d + 8)

First factorise the denominator:

= 18d^2 / 4(d + 2)

The GCF of 18 and 4 is 2 so this simplifies to:

9d^2/2(d + 2)

= 9d^2/(2d+ 4).