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Question

The condition that one root of the equation ax2+bx+c=0 may be double the other, is:


Your Answer
A
b2=9ac
Correct Answer
B
2b2=9ac
Your Answer
C
2b2=ac
Your Answer
D
b2=ac

Solution

The correct option is B 2b2=9ac
Option (b) is the correct answer. Check the video for the approach.

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