Q. Solve the equation for all values of x.∣x+8∣=3xAnswer: x=
Absolute Value Equation Split: We have the equation ∣x+8∣=3x. The absolute value equation can split into two separate equations, one for the positive case and one for the negative case.For the positive case, we have:x+8=3x
Positive Case Solution: To solve for x, we need to get all the x terms on one side. Subtract x from both sides of the equation:x+8−x=3x−x8=2x
Negative Case Solution: Now, divide both sides by 2 to solve for x:28=22x4=x
Positive Case Simplification: For the negative case, we have:−(x+8)=3x−x−8=3x
Positive Case Solution: To solve for x, we need to get all the x terms on one side. Add x to both sides of the equation:−x−8+x=3x+x−8=4x
Negative Case Simplification: Now, divide both sides by 4 to solve for x:−8/4=4x/4−2=x
Negative Case Solution: We have found two potential solutions for the equation ∣x+8∣=3x: x=4 and x=−2. However, we must check these solutions to ensure they do not violate the original absolute value equation.
Check x=4: Check x=4 in the original equation:∣4+8∣=3×4∣12∣=1212=12 which is true.
Check x=−2: Check x=−2 in the original equation:∣−2+8∣=3×−2∣6∣=−66=−6 which is false. Therefore, x=−2 is not a solution.
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