If a, b, c, d are in continued proportion
Prove that (ab-cd) /(b^2-c^2) = (a+c) /b...
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Mathematics, 10.10.2021 01:00 french31
If a, b, c, d are in continued proportion
Prove that (ab-cd) /(b^2-c^2) = (a+c) /b
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