The answer: " x = 5 " .
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Step-by-step explanation:
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Given: " x = √(15 − 2x) " ; Solve for "x" ; 
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 "Square" each side of the equation:
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 → (x)² = [√(15 − 2x) ] ² ; 
 → x = 15 − 2x ;
Now, add "2x" to each side of the equation:
 → x + 2x = 15 − 2x + 2x ;
 → 3x = 15 ; 
Now, divide each side of the equation by "3" ; 
 to isolate "x" on one side of the equation; & to solve for "x" ; 
 → 3x / 3 = 15 / 3 ; 
 → " x = 5 " .
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