Question

31. What is the value of a, if 7 is a root of the equation ax? - 13x -7=0?

No silly answers pls​

Answer 1

Answer:

I think this is right answer

Step-by-step explanation:

Correct option is

A

4

5

5

As α,β are roots of 4x

2

−

13

x−7=0

then α+β=

4

13

,αβ=

4

−7

Now, (α−β)

2

=(α+β)

2

−4αβ=

16

13

+7=

16

125

⇒α−β=

4

5

5