Respuesta :

Answer:

Step-by-step explanation:

Y = 3x  + 16 - 27

 = x = 27 + 16 -3=40as

Hello,

(a+b) (a-b) = a² - b²

or  a² - b² = (a+b) (a-b)

Step-by-step explanation:

3 ( (x+4)² - 9 ) = 3 ( (x+4)² - 3² ) = 3 (x+4+3) (x+4-3) = 3 (x+7) (x+1)

- (x+9)² + 1 = - ( (x+9)² - 1²) = - (x+9+1) (x+9-1) = - (x+10) (x+8)