( 2b – 4 ) ( 2b – 4 ) = … ?Note :Hmm, bagi” lah v:​

( 2b – 4 )( 2b – 4 )

= 4b² -8b – 8b + 16

= 4b² – 16b + 16

atau......

( 2b – 4 ) ( 2b – 4 )

= ( 2b – 4 )²

= (2b)² -(2b)(4)(2) + 4²

= 4b² – 16b + 16

Penjelasan dengan langkah-langkah:

( 2b – 4 ) ( 2b – 4 )

= 4b² – 8b – 8b + 16

= 4b² – 16b + 16