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22 August, 14:38

Fill in the blank with possible missing terms

x^2__-20

+2
Answers (1)
  1. 22 August, 16:01
    0
    x

    2

    =

    20

    square root both sides

    x

    =

    ±



    20

    x

    =

    2



    5

    or

    x

    =

    -

    2

    x

    =

    ±



    20

    Explanation:

    Initial equation

    x

    2

    -

    20

    =

    0

    Add

    20

    on both sides

    x

    2

    =

    20

    Add a square root to both sides



    x

    2

    =

    ±



    20

    Simplify

    x

    =

    ±



    20

    Hope that makes sense!
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