Which of the following equations has the sum of it's roots as 3 ?

(a) 2x^{2} - 3x + 6 = 0

(b) -x^{2} + 3x-3 = 0

(c) rt2x^{2} - 2/rt2 x +1 = 0

(d) 3x^{2} - 3x + 3 = 0

Consider the general quadratic equation

Sum of the roots of the equation is given by .

Thus, the sum of the roots of the equation is given by

The sum of the roots of the equation is given by

The sum of the roots of the equation is given by

The sum of the roots of the equation is given by

Therefore, only in option (b), that is for the equation , the sum of the roots is given by 3.

Hence option (b) is the correct answer.

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