Recognize Simplification: We start by recognizing that the square root of a square cancels out, so we can simplify (x−5)2 to ∣x−5∣. This is because the square root and square are inverse operations, but we must consider that the square root function outputs the non-negative root, hence the absolute value.Calculation: (x−5)2=∣x−5∣
Set Absolute Value: Next, we set the absolute value of x−5 equal to the square root of 18, which gives us two possible equations: x−5=18 or x−5=−18. This is because the absolute value of a number can be either positive or negative.Calculation: ∣x−5∣=18 leads to x−5=18 or x−5=−18
Solve for x (1st Equation): We solve the first equation x−5=18. To find x, we add 5 to both sides of the equation.Calculation: x=18+5
Solve for x (2nd Equation): We solve the second equation x−5=−18. Similarly, we add 5 to both sides of this equation as well.Calculation: x=−18+5
Simplify 18: Now we simplify 18. The prime factorization of 18 is 2×32. We can take the square root of 32 out of the square root, which gives us 3.Calculation: 18=2×32=3×2
Substitute Simplified Form: We substitute the simplified form of 18 back into the equations for x.Calculation: x=3×2+5 and x=−3×2+5
Final Solutions: We now have two possible solutions for x, which are x=3×2+5 and x=−3×2+5.