Square root of an expression: simplify inside, then root

This type of question, asked 3 times: 18 Sep 2025 S2, 23 Sep 2025 S2, 26 Sep 2025 S2. All 3 questions below, oldest first.

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Question 1
18 Sep 2025 S2
52 $\sqrt{388 + \sqrt{127 + \sqrt{289}}}$
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Question 2
23 Sep 2025 S2
52 $\sqrt{(5 \times 196 \div 14 + 25 - 4)}$
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Question 3
26 Sep 2025 S2
51 $\sqrt{(7 \times 447 \div 21 + 73 - 26)}$
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