If a²+b²+c²=2(a-b-c)-3, then the value of 2a-3b+4c is: – McqOptions

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1.	If a²+b²+c²=2(a-b-c)-3, then the value of 2a-3b+4c is:
A.	2
B.	3
C.	1
D.	7
Answer» D. 7

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