Question

Order the steps to solve the equation log(x2 − 15) = log(2x) form 1 to 5. x2 − 2x − 15 = 0 Potential solutions are −3 and 5 x2 − 15 = 2x x − 5 = 0 or x + 3 = 0 (x − 5)(x + 3) = 0

Answer 1

From First to last box.
2
5
1
4
3

Answer 2

Order is 3,1,5,2 and 4.

Step-by-step explanation:

We have

         log(x² - 15) = log(2x)

Solving the equation

             x² - 15 = 2x

             x² - 2x - 15 = 0

             (x-5)(x+3) = 0

             x -5 = 0   or   x + 3  = 0

              x = 5   or  x = -3

The solutions are −3 and 5.

Order of solution is x² − 15 = 2x, x² - 2x - 15 = 0, (x − 5)(x + 3) = 0, x − 5 = 0 or x + 3 = 0 and potential solutions are −3 and 5.

Order is 3,1,5,2 and 4.