Simplify the radical expression.

Square root 7 plus 3 times square root 7
(1 point)
Responses

2 times square root 7
Image with alt text: 2 times square root 7

4 times square root 14
Image with alt text: 4 times square root 14

4 times square root 7
Image with alt text: 4 times square root 7

2 times square root 14

1 answer

4 times square root 7
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