Moniikae
Moniikae
23-02-2017
Mathematics
contestada
Solve rational and radical equation.
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Аноним
Аноним
23-02-2017
square it -56 + 15k = k^2
re arrange get k^2 - 15k + 56 = 0
factor (k - 7)(k - 8) = 0
solve k - 7 = 0, k - 8 = 0
k = 7 or 8
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