Respuesta :

Answer: Y=3x^2+9x-30

Step-by-step explanation:

Y=3(x+5)(x-2)

Y=3(x*x-2*x+5*x-2*5) ==> distribution of (x+5)(x-2)

Y=3(x^2-2x+5x-10)

Y=3(x^2+3x-10)

Y=3x^2+9x-30