Simplify 5 square root of 7-4x square root of 7-x square root of 7

$5 \sqrt{7} - 4 x \sqrt{7} - x \sqrt{7}$

Step 1

Subtract $x \sqrt{7}$ from $- 4 x \sqrt{7}$ .

$5 \sqrt{7} - 5 x \sqrt{7}$

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