[tex]\displaystyle\bf\\1)\\\\7^{4\log_{7}3 }= 7^{\log_{7}3^{4} }=7^{\log_{7}81 }=81\\\\2)\\\\\frac{\log_{3} 5^{2} }{2\log_{3} 5} =\frac{\log_{3} 25 }{\log_{3} 5^{2} } =\frac{\log_{3} 25 }{\log_{3} 25 } =1\\\\3)\\\\\frac{\log_{7}11^{8} }{2\log_{7} 11} =\frac{8\log_{7}11 }{2\log_{7} 11} =\frac{8}{2}=4[/tex]
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[tex]\displaystyle\bf\\1)\\\\7^{4\log_{7}3 }= 7^{\log_{7}3^{4} }=7^{\log_{7}81 }=81\\\\2)\\\\\frac{\log_{3} 5^{2} }{2\log_{3} 5} =\frac{\log_{3} 25 }{\log_{3} 5^{2} } =\frac{\log_{3} 25 }{\log_{3} 25 } =1\\\\3)\\\\\frac{\log_{7}11^{8} }{2\log_{7} 11} =\frac{8\log_{7}11 }{2\log_{7} 11} =\frac{8}{2}=4[/tex]