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17 March, 20:25

19. Evaluate sqr rt 7x (sqr rt x - 7 sqr rt 7) Show your work.

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  1. 17 March, 20:27
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    √7x * (√x-7 √7)

    √7x √ (x-7) * 7

    √7x√7x-49

    √7x * (7x-49)

    √49x²-343x
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