Question

Which of the following equations has the sum of
the roots -5?
(A) 3x2 – 15x +3=0 (B) x2 – 5x + 3 = 0
(C), x2 + 3x –5=0 (D) x2 + 8x – 15 = 0​

Answer 1

Answer: actually none of the options does!

Step-by-step explanation: Let alpha and beta be the roots of the equation, then sum of the roots = -b/a, and here I'm option A and option B, we get only +5 if we do so, so none of the above

Answer 2

Answer:

A

Step-by-step explanation:

There is no option true.

However it is possible that there might be a mistake in the options.

We know that,

Sum of zeroes =alpha+beta= –b/a

=>–(–15)/3 = 15/3 =5

So your answer is 5.

It might also be option b because it also has sum of the roots as +5.

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