Question

x2(x + 2) – 3x (x2 – 3) – 5x(x + 5) .. please fast ​

Answer 1

Answer:

x²(x + 2) – 3x (x² – 3) – 5x(x + 5)

= x³ + 2x² - 3x³ + 9x - 5x² - 25x

[ add & subtract like terms ]

= x³ - 3x³ - 5x² + 2x² - 25x + 9x

$\huge = 2x³ - 3x³ - 16x$