Question

Factorise...
a (a - 1) - b (b - 1)​

Answer 1

Answer:

Your answer is

Step-by-step explanation:

a²-a-b²+b

a²+b²-a-b

HOPE IT IS HELPFUL...

Answer 2

Step-by-step explanation:

GIVEN :----

》 a (a - 1) - b (b - 1)《

☆Solution ☆

$= {a}^{2} - a - {b}^{2} + b \\ = {a }^{2} - {b}^{2} - a + b \\ = (a + b)(a - b) - a + b \\ = (a + b)(a - b - a- b) \\= (a + b)- 2b \\ = - (2ab + 2 {b}^{2} )$

ANSWER:- - 2ab + 2b^2 .

100 % correct ✌✌