Ответ: [tex]=\frac{10}{\sqrt{a}-3 }[/tex]
Объяснение:
[tex]\frac{5}{a-9} :\frac{1}{2\sqrt{a}+6 } =\frac{5*(2\sqrt{a}+6) }{(\sqrt{a}-3)(\sqrt{a} +3)}=\frac{5*2*(\sqrt{a}+3)}{(\sqrt{a}-3)(\sqrt{a} +3)} =\frac{10}{\sqrt{a}-3 }[/tex]
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Ответ: [tex]=\frac{10}{\sqrt{a}-3 }[/tex]
Объяснение:
[tex]\frac{5}{a-9} :\frac{1}{2\sqrt{a}+6 } =\frac{5*(2\sqrt{a}+6) }{(\sqrt{a}-3)(\sqrt{a} +3)}=\frac{5*2*(\sqrt{a}+3)}{(\sqrt{a}-3)(\sqrt{a} +3)} =\frac{10}{\sqrt{a}-3 }[/tex]