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Bab Bilangan IrrasionalMatematika SMP Kelas VII
A] 2√6 (√2 + 4√3 - 1)
= 2√12 + 8√18 - 2√6
= 2 . √4 . √2 + 8 . √9 . √2 - 2√6
= 2 . 2√2 + 8 . 3√2 - 2√6
= 4√2 + 24√2 - 2√6
= 28√2 - 2√6
B] √5 (2√3 + 4√5 - √3)
= √5 (√3 + 4√5)
= √15 + 4 . √25
= √15 + 4 . 5
= √15 + 20