dri7 dri7
  • 01-11-2017
  • Mathematics
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Help me please thank you

Help me please thank you class=

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choixongdong
choixongdong choixongdong
  • 01-11-2017
√(21 - x)
= √(21 - 9)
= √12
= 2√3

answer
B  2√3
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