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3 May, 01:56

Find the exact value of the radical expression in simplest form.

2 the square root of 7 times x + the square root of 7 times x - 3 the square root of 7 times x - 7

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  1. 3 May, 04:12
    0
    Here's the expression based on your question:

    2√7x + √7x - 3√7x - 7 =

    3√7x - 3√7x - 7 =

    0-7 =

    -7

    The correct answer is - 7. You can easily subtract 2√7x, √7x, and 3√7x because they all have √7x in common, so it's basically the same as subtracting simple numbers 2, 1, and 3.
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