Question

if * is binary operation in z defined bya*b=2a-b then fi d 12*4....​

Answer 1

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☞Given, The binary operation ⋆ on R is defined by

$a⋆b=2a+b.$

$2⋆3=2×2+3=4+3=7.$

$∴(2⋆3)⋆4=7⋆4=2×7+4=14+4=18$

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Answer 2

Answer:

।if * is binary operation in z defined bya*b=2a-b then fi d 12*4....

2a-b=2ab

$2a - b = 2ab \\ 12 \times 4 \\ 48 \\ 2ab = 48 \\ ab = 48 \div 2 \\ 24$

HOPE ITS HELPS YOU♥️