Question

15x^2 - 25x - 40 in factorise

Answer 1

Step-by-step explanation:

this is the answer of your question

Answer 2

Step-by-step explanation:

$given$

$\: \: \: \: \: \: {15x}^{2} - 25x - 40$

$= {15x}^{2} - 40x + 15x - 40$

$= 5x(3x - 8) + 5(3x - 8)$

$= (3x - 8)(5x + 5)$

$= 5(x + 1)(3x - 8)$