algebra,math

posted by tracy

Solve the equation. 4 times the square root of x minus 5 minus 8 = 12

  1. tracy

    I think I got it, its 20

  2. Reiny

    is it
    4√x - 5 - 8 = 12
    or
    4√(x-5) - 8 = 12
    I think the latter or else they would have combined the -5 and -8

    so 4√(x-5) = 20
    √(x-5) = 5
    square both sides
    x-5 = 25
    x = 30

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