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Question

The roots of the quadratic equation 3x2+2x1=0 are .

A
-1, 13
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B
-2, 13
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C
1, 13
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D
2, 3
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Solution

The correct option is A -1, 13
3x2+2x1=0
3x2+3xx1=0
3x(x+1)1(x+1)=0
(3x1)(x+1)=0
(3x1)=0 or (x+1)=0
x=13 or x=1
The roots of the given equation are 1, 13 .

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