pls pls solve it s very urgently needed
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A^2 + b^2 - 2(ab - ac +bc)
= a^2 + b^2 - 2ab + 2ac - 2bc
= (a- b)^2 + 2ac - 2bc [ we know that a^2 + b^2 - 2ab
= (a-b)^2]
= (a- b)^2 +2c (a-b)
= (a- b) (a-b + 2c)
= a^2 + b^2 - 2ab + 2ac - 2bc
= (a- b)^2 + 2ac - 2bc [ we know that a^2 + b^2 - 2ab
= (a-b)^2]
= (a- b)^2 +2c (a-b)
= (a- b) (a-b + 2c)
mitanshugarg1:
wrong
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