Question
Sum of the zeros of the equation \(3x^2+2x-5\) is?
This question was previously asked in
RRB ALP/Technician 2018 CBT 2 Electronics Mechanic Question Paper (23-Jan-2019) (Shift 1)
The correct answer is
-2/3
Finding the Sum of Zeros for \(3x^2+2x-5\)
For a quadratic equation in the standard form \(ax^2+bx+c=0\), the sum of its zeros (roots) is given by the formula:
Sum of zeros = \(\boldsymbol{-b/a}\)
Identify Coefficients
In the given equation, \(3x^2+2x-5 = 0\):
- \(a = 3\)
- \(b = 2\)
- \(c = -5\)
Calculate the Sum of Zeros
Using the formula:
Sum of zeros = \(\boldsymbol{-b/a} = \boldsymbol{-(2)/(3)}\)
Sum of zeros = \(\boldsymbol{-2/3}\)
Conclusion
The sum of the zeros for the equation \(3x^2+2x-5\) is \(\boldsymbol{-2/3}\).
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