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6 September, 10:19

What are the four steps to solve a Square Root Equation?

Solve for x: (x - 5) ² = 81

+4
Answers (2)
  1. 6 September, 11:40
    0
    Answer:Isolate the radical expression.

    Square both sides of the equation: If x = y then x2 = y2.

    Once the radical is removed, solve for the unknown.

    Check all answers.

    x=14,-4
  2. 6 September, 12:10
    0
    x=14 or x = - 4

    Step-by-step explanation:

    hello:

    (x - 5) ² = 81 equivalent to : (x - 5) ² - 9² = 0

    by identity : a²-b² = (a-b) (a+b)

    (x-5-9) (x-5+9) = 0

    (x-14) (x+4) = 0

    x-14 = 0 or x+4=0

    x=14 or x = - 4
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