If a3 b3 = 56 and a b = 2, then the value of ( a2 + b2 ) is :

1.	If a³ b³ = 56 and a b = 2, then the value of ( a² + b² ) is :
A.	10
B.	12
C.	20
D.	18
Answer» D. 18

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If a³ b³ = 56 and a b = 2, then the value of ( a² + b² ) is :

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