Question

Factorise 4 ab² - 10 a² b² - 20 a² b² + 2 ab²
Step-by-step explanation needed​

Answer 1

Step-by-step explanation:

see the attached document

Answer 2

Answer:

$4{ab}^{2} + 2{ab}^{2} - 10 {a}^{2} {b}^{2} - 20 {a}^{2} {b}^{2}$

$6a {b}^{2} - 30 {a}^{2} {b}^{2}$