Simplify 4 square root of 7-3x square root of 7-x square root of 7

$4 \sqrt{7} - 3 x \sqrt{7} - x \sqrt{7}$

Step 1

Subtract $x \sqrt{7}$ from $- 3 x \sqrt{7}$ .

$4 \sqrt{7} - 4 x \sqrt{7}$

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