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N+5 - n-10=1 The n=5 and n-10 are in square root symbols

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D:x\geq-5 \wedge x\geq10\\ D:x\geq10\\\\ √(n+5)-√(n-10)=1\\ √(n+5)=1+√(n-10)\\ n+5=1+2√(n-10)+n-10\\ 2√(n-10)=14\\ √(n-10)=7\\ n-10=49\\ n=59
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