If the equation \( \left(a^{2}+b^{2}\right) x^{2}-2(a c+b d) x+c^{2}+d^{2}=0 \) has equal roots,... VIDEO
If the equation \( \left(a^{2}+b^{2}\right) x^{2}-2(a c+b d) x+c^{2}+d^{2}=0 \) has equal roots, then
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(a) \( a b=c d \)
(b) \( a d=b c \)
(c) \( a d=\sqrt{b c} \)
(d) \( a b=\sqrt{c d} \)
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