7.( )已知6a = -4 , b = (-4)6 , c = 42 x 44 , d = (42 )3 ;請問對於a,b,c,d這四個數關係的判斷,下列何者正確?(A)a = b = c = d
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7.( )已知6a = -4 , b = (-4)6 , c = 42 x 44 , d = (42 )3 ;請問對於a,b,c,d這四個數關係的判斷,下列何者正確? (A)a = b = c = d (B)a = b,c ≠ d (C)a = b = c,c ≠ d (D)a ≠ b,b = c = d