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babymother [125]
3 years ago
7

2 square root 32 - 5 square root 128

Mathematics
1 answer:
GrogVix [38]3 years ago
4 0
2 \sqrt{32} -5 \sqrt{128} =2 \sqrt{16 \times 2} -5 \sqrt{64 \times 2}  \\ =2 \times  \sqrt{16}  \times  \sqrt{2} -2 \times  \sqrt{64}  \times  \sqrt{2}  \\ =2(4) \sqrt{2} -2(8) \sqrt{2} =8 \sqrt{2} -16 \sqrt{2}  \\ =-8 \sqrt{2}
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