MCQ
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
- A$a b=c d$
- ✓$a d=b c$
- C$a d=\sqrt{b c}$
- D$a b=\sqrt{c d}$
✓
Answer
Correct option: B.
$a d=b c$
B
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