If one root of the quadratic equation ax2+bx+c=0 is 3−4i, then 31a+b+c is equal to
A
0
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B
2a
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C
2b
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D
2c
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Solution
The correct option is D2c
Since one of the root of the quadratic equation ax2+bx+c=0 is 3−4i, therefore, it is obvious that 3+4i is also the root of the given equation. Now, consider