Respuesta :
The student went wrong in Step 3.
After setting each factor equal to 0, the student solved for x wrong in the second equation. To solve for x in the second equation, the student should subtract 10 from both sides. The solutions of the equation would be X = -4 and X = -10.
X + 10 = 0
X + 10 -10 = 0 - 10
X = -10
After setting each factor equal to 0, the student solved for x wrong in the second equation. To solve for x in the second equation, the student should subtract 10 from both sides. The solutions of the equation would be X = -4 and X = -10.
X + 10 = 0
X + 10 -10 = 0 - 10
X = -10