[tex]\displaystyle\bf\\1)\\\\x^{2} =16\\\\x_{1,2} =\pm \ \sqrt{16} =\pm \ 4\\\\2)\\\\x^{2} =-4\\\\x\in\oslash \ -kornei \ net\\\\3)\\\\x^{2} =5\\\\x_{1,2} =\pm \ \sqrt{5} \\\\4)\\\\\sqrt{x} =0\\\\x=0\\\\5)\\\\\sqrt{x} =9\\\\x=9^{2} =81\\\\6)\\\\\sqrt{x} =-49\\\\x\in \oslash \ -kornei \ net[/tex]
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[tex]\displaystyle\bf\\1)\\\\x^{2} =16\\\\x_{1,2} =\pm \ \sqrt{16} =\pm \ 4\\\\2)\\\\x^{2} =-4\\\\x\in\oslash \ -kornei \ net\\\\3)\\\\x^{2} =5\\\\x_{1,2} =\pm \ \sqrt{5} \\\\4)\\\\\sqrt{x} =0\\\\x=0\\\\5)\\\\\sqrt{x} =9\\\\x=9^{2} =81\\\\6)\\\\\sqrt{x} =-49\\\\x\in \oslash \ -kornei \ net[/tex]