busybee1123 busybee1123
  • 03-06-2018
  • Mathematics
contestada

How do I solve this?

How do I solve this class=

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thomaslaterica1 thomaslaterica1
  • 03-06-2018
Does this have something to do with the radius ?
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KyngOyinda
KyngOyinda KyngOyinda
  • 03-06-2018
r²+10r+21
r²+3r+7r+21=0
r(r+3)+7(r+3)=0
(r+7)(r+3)=0
r+7=0. Or r+3=0
r=-7. Or r=-7
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