If the ratio of the roots of the equation x2 – 2ax + b = 0 is equal to that of the roots x2 – 2cx + d = 0, then:  Select:
A) a2b = c2d B) a2c = b2d C) a2d = c2b D) d2 b = c2 a E) none
x^2-2ax+b=0 for this eqn..roots r....R1=2a/1,R2=b/1;   x^2-2cx+d=0 for this eqn ..roots r...R3=2c/1,R4=d;   As per question ,2a/b=2c/d   =&gt;2ad=2bc   ANSWER:a2d = c2b
<result>C</result>
If the ratio of the roots of the equation x2 – 2ax + b = 0 is equal to that of the roots x2 – 2cx + d = 0, then: