Respuesta :

Answer:

b=2

Step-by-step explanation:

if x-4 is a factor,then, x-4=0 hence, x=4

sub x=4 in the equation and equate it to zero -from factor theorem

4^2 +4b -24=0

16+4b -24=0

4b=24-16

4b=8

b=8/4=2

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