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1 answer:

3 0

5 $\sqrt{x}$ +10-15=30
5 $\sqrt{x}$ =35
 $\sqrt{x}$ =7
х=49
5√49+10-15=30
30=30

$\sqrt{x}$ +1+7=4
 $\sqrt{x}$ =-4
it is no solution

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