- 35x
^{2}+ 21x – 5 - 35x
^{2}- 21x – 5 - 35x
^{2}- 21x + 5 - 35x
^{2}+ 21x + 5 - None of these

Option 2 : 35x^{2} - 21x – 5

Free

RBI Grade B 2020: Full Mock Test

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200 Questions
200 Marks
120 Mins

**Given:**

Sum of roots and product of roots of the equation are 3/5 and -1/7 respectively.

**Concept Used:**

If quadratic equation is ax^{2} + bx + c = 0, then

Sum of roots (α + β) = -b/a

And product of roots (α × β) = c/a

**Calculation:**

Let the roots of the equation are α and β

∴ Sum of roots (α + β) = -b/a = 3/5 = 21/35

And product of roots (α × β) = c/a = -1/7 = -5/35

Hence, a = 35, b = -21 and c = -5

∴ Required equation = 35x
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