Question

(X -1) (X + 3 )(X + 5 )​

Answer 1

Step-by-step explanation:

{x( x+ 3) - 1( x + 3) } ( x + 5)

(x² + 3x - x - 3 ) ( x + 5)

( x² + 2x - 3) ( x + 5)

x( x² + 2x - 3) +5( x² +2x - 3)

x³ + 2x² - 3x + 5x² +10x - 15

x³ +7x²+7x -15