Problem

Solve the equation.
x124x=0

Answer

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Answer

Therefore, the only solution is x=2.

Steps

Step 1 :First, we note that x must be less than or equal to 3, since 124x is undefined if x>3.

Step 2 :Then, we simplify the equation by moving 124x to the right side of the equation, which gives x=124x.

Step 3 :Next, we square both sides of the equation to eliminate the square root, which gives x2=124x.

Step 4 :Rearranging the equation gives x2+4x12=0.

Step 5 :Then, we factor the quadratic equation, which gives (x+6)(x2)=0.

Step 6 :Setting each factor equal to zero gives the solutions x=6 and x=2.

Step 7 :However, we note that x=6 is not a valid solution, since it would result in a negative number under the square root in the original equation.

Step 8 :Therefore, the only solution is x=2.

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