Объяснение:
[tex]x\geq 0\ \ \ \ \\\\x-7=(\sqrt{x} )^2-(\sqrt{7)}^2=(\sqrt{x} +\sqrt{7})*)(\sqrt{x} -\sqrt{7} ).[/tex]
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Объяснение:
[tex]x\geq 0\ \ \ \ \\\\x-7=(\sqrt{x} )^2-(\sqrt{7)}^2=(\sqrt{x} +\sqrt{7})*)(\sqrt{x} -\sqrt{7} ).[/tex]