规定A( )B=2A+3B,求:6( )1= (1.6( )0.5)( )2=_数学解答

规定A( )B=2A+3B,求:6( )1= (1.6( )0.5)( )2=

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解答

6( )1=
=2×6+3×1
=15
(1.6( )0.5)( )2
=(2×1.6+3×0.5)( )2
=4.7( )2
=2×4.7+3×2
=15.4