Question

Order the steps to solve the equation log(x2 - 15) = log(2x) form 1 to 5.

Answer 1

Step 1: x²-15=2x
step 2: x²-2x-15=0
step 3: (x-5)(x+3)=0
step 4: x-5=0 or x+3=0
step 5: x=5 of x=-3