Seudónimo Seudónimo
  • 14-02-2019
  • Mathematics
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Help me please thank you

Help me please thank you class=

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Moonslin
Moonslin Moonslin
  • 14-02-2019

3a + b × a - b would be 3a² + ab + 3ab + b² =

3a² - 4ab - b² aka B.

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