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The equation 3√x-k-2=10 has a solution of x = 5. What is the value of k?

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  1. 22 May, 10:20
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    The value of k is - 11.

    Step-by-step explanation:

    Given equation is 3√ (x-k) - 2=10

    Step 1: Since the value of x = 5, we will substitute value of x in the given equation.

    3√ (5-k) - 2=10

    => 3√ (5-k) = 10 + 2

    => 3√ (5-k) = 12

    Step 2: Dividing both sides by 3

    3√ (5-k) / 3 = 12/3

    √ (5-k) = 4

    Step 3 : Squaring both sides

    √ (5-k) ^2 = 4^2

    (5-k) = 16

    Step 4 : Separating the value of

    => 5-16 = k

    => - 11 = k

    => k = - 11

    Therefore, the value of k is - 11.

    !
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