Question

If x=a and x=b for the solution of x^2-3=2x and a<b what is b-a​

Answer 1

9514 1404 393

Answer:

4

Explanation:

Written in standard form, the quadratic is ...

x^2 -2x -3 = 0

This can be factored as ...

(x -3)(x +1) = 0

so the solutions are ...

x = 3, x = -1 . . . . . . values of x that make the factors zero

The difference of interest is ...

3 -(-1) = 4