Given four quantities a, b, c and d are in
proportion. Show that :
(a - c) 62: (b - d) cd
(a? - b2 - ab) : (c2 - d2 - cd)
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Given four quantities a, b, c and d are in
proportion. Show that :
(a - c) 62: (b - d) cd
(a? - b2 - ab) : (c2 - d2 - cd)
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