Respuesta :

first it contain 9x^2 so it should be (3x+a)(3x+b)
then divide 48 by 3 .48/3=16
a and b are two numbers with sum of 16 and production of 64.
a=b=8
(3x+8)^2

Answer:

(3x+8)^2

Step-by-step explanation:

(3x+8)^2

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