Question

# If the quadratic equation and have a common root then is equal to

- -2
- -1
- 0
- 1

Hint:

### In the question the two equations have common root so we can let the root to be any variable then we will put the value of x in both the equations and subtract the equations then we will get the value of root after that we can put the value of root in the equation and get the required result.

## The correct answer is: 0

### The two quadratic equations are ￼ and

Let be the common root.

Now,

subtracting the equations, we get

now putting the value in equation1

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