( 3akar5 - 3akar6 ) ( 4akar5 + 4akar6 ) pake jalan

makasih
semoga membantu

[tex](3 \sqrt{5} - 3 \sqrt{6} )(4 \sqrt{5} + 4 \sqrt{6} ) \\ = (12 \times 5) + 12 \sqrt{30} - 12 \sqrt{30} - (12 \times 6) \\ = 60 - 72 = - 12[/tex]