यदि द्विघात समीकरण \( \left(a^{2}+b^{2}\right) x^{2}-2(a c+b d) x+\left(c^{2}+d^{2}\right)=0 \) ...
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यदि द्विघात समीकरण \( \left(a^{2}+b^{2}\right) x^{2}-2(a c+b d) x+\left(c^{2}+d^{2}\right)=0 \) के मूल समान हों, तो सिद्ध करो कि: \( \frac{a}{b}=\frac{c}{d} \) ।
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