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Solve the equation for all values of 
x.

|2x+6|=x
Answer: 
x=

Solve the equation for all values of x x .\newline2x+6=x |2 x+6|=x \newlineAnswer: x= x=

Full solution

Q. Solve the equation for all values of x x .\newline2x+6=x |2 x+6|=x \newlineAnswer: x= x=
  1. Absolute Value Equation: We have the equation 2x+6=x|2x + 6| = x. To solve this, we need to consider two cases because the absolute value function outputs the input value if it's non-negative, and the negation of the input value if it's negative.
  2. Case 11 Solution: Case 11: If 2x+62x + 6 is non-negative, then 2x+6=2x+6|2x + 6| = 2x + 6. So we have the equation 2x+6=x2x + 6 = x. Now, we solve for xx.\newlineSubtract xx from both sides to get x+6=0x + 6 = 0.\newlineSubtract 66 from both sides to get x=6x = -6.
  3. Case 22 Solution: Case 22: If 2x+62x + 6 is negative, then 2x+6=(2x+6)|2x + 6| = -(2x + 6). So we have the equation (2x+6)=x-(2x + 6) = x. Now, we solve for xx.\newlineDistribute the negative sign to get 2x6=x-2x - 6 = x.\newlineAdd 2x2x to both sides to get 6=3x-6 = 3x.\newlineDivide both sides by 33 to get x=2x = -2.
  4. Check Validity: We need to check if our solutions make the original equation true. For x=6x = -6, substituting into the original equation gives 2(6)+6=6|2(-6) + 6| = -6, which simplifies to 12+6=6|-12 + 6| = -6, and further to 6=6|-6| = -6. Since the absolute value of a number cannot be negative, x=6x = -6 is not a valid solution.
  5. Final Solution: For x=2x = -2, substituting into the original equation gives 2(2)+6=2|2(-2) + 6| = -2, which simplifies to 4+6=2|-4 + 6| = -2, and further to 2=2|2| = -2. Since the absolute value of a number cannot be negative, x=2x = -2 is not a valid solution either.

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