ellanboot ellanboot
  • 05-04-2018
  • Mathematics
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What equation is equivalent to 2r^2-28r+38

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robixqueenp6n4bv robixqueenp6n4bv
  • 05-04-2018

2r² − 28r + 38 = 0 
2 (r² − 14r) = −38 
2 (r² − 14r + 49) = −38 + 2(49) 
2 (r − 7)² = 60 

(r − 7)² = 30
the answer is 2(r-7)² =60
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