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Write the value of ( 5 hati + 3 ha...

Write the value of ` ( 5 hati + 3 hatj ) * ( 5 hati - 3 hatj ) `

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`( 5hati + 3 hatj ) . ( 5 hati - 3 hatj ) = 25 hati . "" hatj + 15 hati . "" hatj + 15 hati * hatj - 9 hatj * hatj = 16`
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