If a+b-c = 14 then the value of:2b²c²+2c²a²+2a²b²-a^4-b^4-C^4 – McqOptions

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1.	If a+b-c = 14 then the value of:2b²c²+2c²a²+2a²b²-a^4-b^4-C^4
A.	14
B.	28
C.	7
D.	0
Answer» B. 28

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