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33 akar 2
B. kalau gak salah hasilnya 6 akar 3 - 20 - 2 akar 5
= √2 + 4×2√2 - 2×3√2 + 6×5√2
= √2 + 8√2 - 6√2 + 30√2
= 33√2
b. 6√3 + 2√25×5 - 4√25×3 - 3√16×5
= 6√3 + 2×5√5 - 4×5√3 - 3×4√5
= 6√3 + 10√5 - 20√3 - 12√5
= 6√3 - 20√3 + 10√5 - 12√5
= - 14√3 - 2√5