Question

Find the HCF of :
a²-b²-2a+1 and a²-ab-a​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

(a -b -1)

Step-by-step explanation:

Solution:

Given,

1st expression: a² -b² -2a +1

= (a² -2a +1²) -b²

= (a-1)² - (b)²

= (a -b -1)(a +b -1)

2nd expression: a² -ab -a

= a (a -b -1)

Now,

Highest Common Factor (H.C.F.) = common factors only

= (a -b -1)