Question

the sum of the roots of the quadratic equation 6x2 -13x-15 =0 a) -5/6 b) -13/6 c) 13/6 d) 5/6​

Answer 1

Answer:

Sum of roots of quadratic equation is given by the formula :

-b/a where b and a are coefficients of x and x&2 respectively.

sum=-b/a=-(-13)/6=13/6

option c . is the correct answer.

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Answer 2

Answer:

(c)

Step-by-step explanation:

For finding roots :-

6x^2 - 13x - 15 = 0

=> 6x^2 - 18x + 5x - 15 = 0

=> 6x (x - 3) + 5 (x - 3) = 0

=> (6x + 5)(x - 3) = 0

=> 6x + 5 = 0 OR x - 3 = 0

=> x = -5/6 OR x = 3

Sum of roots = -5/6 + 3 = 13/6

Therefore answer is (c)

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