Solve the Absolute Value Equation: |x + 2| = 4

Question

x+2=4 \left|x+2\right|=4

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Set up two linear equations from the absolute value definition.
  • Step 2: Solve each equation for x x .

Now, let's work through each step:

Step 1: Consider the two cases from x+2=4 \left|x + 2\right| = 4 .

  • First case: x+2=4 x + 2 = 4 .
  • Second case: x+2=4 x + 2 = -4 .

Step 2: Solve the two equations:

For the first case:

x+2=4 x + 2 = 4

Subtract 2 from both sides:

x=42 x = 4 - 2 x=2 x = 2

For the second case:

x+2=4 x + 2 = -4

Subtract 2 from both sides:

x=42 x = -4 - 2 x=6 x = -6

Therefore, the solutions to the equation x+2=4 \left|x + 2\right| = 4 are:

x=6 x = -6 and x=2 x = 2 .

The correct option is:

x=6,x=2 x = -6, x = 2

Thus, the solution to the problem is:

x=6,x=2 x = -6, x = 2

Answer

x=6 x=-6 , x=2 x=2