ab^2-bc^2-ab-c^2 factorise it
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13
ab^2-ab-bc^2-c^2
=ab (b-1)-c^2 (b+1)
I think there is mistake of a sign
=ab (b-1)-c^2 (b+1)
I think there is mistake of a sign
Answered by
6
ab^2-bc^2-ab+c^2
=ab(b-1)-c^2(b+1)
in sign there is mistake
=ab(b-1)-c^2(b+1)
in sign there is mistake
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