Question

if (4a^2 + 7b^2) : (4a^2 - 7b^2) = (4c^2 + 7d^2) : (4c^2 - 7d^2), prove that a:b = c:d​

Answer 1

Step-by-step explanation:

I have attached step by step explaination above

Please ignore the cancellations made in the sheet

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