Factorise
Asquare +Bsquare - 2(ab-ac+bc)
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Step-by-step explanation:
A sqr + B sqr - 2(ab - ac +bc)
= A sqr +B sqr - 2ab + 2ac - 2bc
= (a- b)sqr + 2ac - 2bc [ we know that a sqr + b sqr - 2ab
= (a-b)sqr]
= (a- b) sqr+2c (a-b)
= (a- b) (a-b + 2c)
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