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Verified answer
MAPEL = MATEMATIKAKELAS = 9
BAB = AKAR & PANGKAT
2√8 - 4√32 + √128
= 2√(4 × 2) - 4√(16 × 2) + √(64 × 2)
= (2 × 2)√2 - (4 × 4)√2 + 8√2
= 4√2 - 16√2 + 8√2
= -4√2
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