Oliver is trying to solve the following equation by completing the square. x2−32x+31=0 Here are the steps Oliver used to complete the square. Original equation: Line 1: Line 2: Line 3: Line 4: Line 5: Line 6: x2−32x+31x2−32xx2−32x+32(x−16)2(x−1 6)2−−−−−−−−√x−16x0−31−31+3211–√±115 and x=17 Oliver did not get the correct solutions. Which line contains Oliver's first mistake?