Respuesta :

Answer:

-9h² - 12h - 3

Step-by-step explanation:

Follow the FOIL method:

FOIL = First, Outside, Inside, Last

Multiply the terms together:

First: 9h * -h = -9h²

Outside: 9h * -1 = -9h

Inside: 3 * -h = -3h

Last: 3 * -1 = -3

Combine like terms: 9h² + (-9h - 3h) - 3

9h² - 12h - 3

-9h² - 12h - 3 is your answer.

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(9h+3)(-h-1)
-9h^2 - 9h -3h -3 = 0
-9h^2 -12h -3 = 0
(h+1)(3h+1) = 0
h = -1, h = -1/3