Materi : Bentuk Aljabar
( 5x - 7 )( 4x + 3 ) = 20x² - 13x - 21
---
= - 4ab( 3a² - 4ab + 5b² )
= - 12a³b + 16a²b² - 20ab³
( 5x² + 6y )( 5x² - 6y )
= (5x²)² - (6y)² [ ( a + b )( a - b ) = a² - b² ]
= 25x⁴ - 36y²
Semoga bisa membantu
[tex] \boxed{ \colorbox{darkblue}{ \sf{ \color{lightblue}{ answered\:by\: BLUEBRAXGEOMETRY}}}} [/tex]
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Materi : Bentuk Aljabar
( 5x - 7 )( 4x + 3 ) = 20x² - 13x - 21
---
= - 4ab( 3a² - 4ab + 5b² )
= - 12a³b + 16a²b² - 20ab³
---
( 5x² + 6y )( 5x² - 6y )
= (5x²)² - (6y)² [ ( a + b )( a - b ) = a² - b² ]
= 25x⁴ - 36y²
---
Semoga bisa membantu
[tex] \boxed{ \colorbox{darkblue}{ \sf{ \color{lightblue}{ answered\:by\: BLUEBRAXGEOMETRY}}}} [/tex]