What are the roots of x^2 - 4x - 7 = 0

For the given equation, the solutions are

Step-by-step explanation:

Step 1:

For an equation of the form the solution is .

Here a is the coefficient of , b is the coefficient of x and c is the constant term.

Comparing with , we get that a is 1, b is -4 and c is -7.

To get the solution, we substitute the values of a, b, and c in .

Step 2:

Substituting the values, we get

So

answer: the common difference is -0.10