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Question

One of the positive roots of the quadratic equation 3x25x2=0 is :

A
-3
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B
13
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C
2
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D
13
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Solution

The correct option is C 2
From the given quadratic equation,
a = 3, b = -5, c = -2

Using the quadratic formula,
x=b±b24ac2a
x=(5)±(5)24(3)(2)2(3)
x=5±25+246
x=5±76
x=5+76,576
x=126,26
x=2,13

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