a man bought a second hand car for $14000. he spent an extra 8% of that value on repairs. how much did he spend on repairs?

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Redhead667

22.08.2021

Mathematics

${3k}^{2} = 243 \\ = {3k}^{2} - 243 = 0 \\ = 3( {k}^{2} - 81) = 0 \\ = 3[(k) ^{2} - {(9)}^{2} ] = 0 \\ = 3(k - 9)(k + 9) = 0 \\ = (k - 9)(k + 9) = 0 \\ = k = 9 \: \: or \: \: - 9$

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