(a-b-c)2 - (a+b+c)2 what is the answer of this pls say to me pls
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Answer:
solve easily by using identities and expressions
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Step-by-step explanation:
(a-b-c)2 - (a+b+c)2
It is in the form a² - b² = (a+b) (a-b)
= [ (a-b-c) + (a+b+c) ] [ (a-b-c) - (a+b+c) ]
= [ a-b-c + a+b+c ] [ a-b-c - a-b-c) ]
= 2a x (-2b - 2c)
= 2a x -2 (b + c)
= -4a(b + c)
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