Respuesta :

Answer:

x=1.6 and x=13.4

Step-by-step explanation:

First we must bring -3x over to the left side by addin git the both sides

madodakarabo762

Answer:

x=13.4 or x=1.6

Step-by-step explanation:

use the quadratic formula x= -b±√(b²-4ac) all divided by 2

Where a = 1 b= -15 c=21

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