Yes it is. Hope this helps
Step 1: both sides subtract 50: x²+18x=-41
step 2: both sides add (1/2 of 18)², which is 81: x²+18x+81=-41+81
step 3: make the square: (x+9)²=40
step 4: square root both sides: x+9=√40 or x+9=-√40
simplify: x=-9+2√10 or x=-9-2√10
Take X as the original cost 255=1.5x.... Since the value has appreciated by 60% X=255/1.5=170...
one hundred and twelve is another way
