ellanboot
ellanboot
05-04-2018
Mathematics
contestada
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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