(a + b + c - d)2 - (a - b - c + d)2= ? – McqOptions

MCQOPTIONS

1.	(a + b + c - d)2 - (a - b - c + d)2= ?
A.	4a (b + c - d)
B.	2a(b + c + d)
C.	2a (b - c + d)
D.	2a (b + c - d)
Answer» B. 2a(b + c + d)

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