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Efectuează:
[tex]( \sqrt7) {}^{4} \div ( \sqrt{7) {}^{3} } [/tex]
[tex]( \sqrt{11) {}^{2 } } \div ( \sqrt{11) {}^{3} } [/tex]
[tex]( \sqrt{ \frac{1}{3} )} {}^{3} \div ( \sqrt{ \frac{1}{3} } ) {}^{4} [/tex]
[tex] \sqrt{8 {}^{3} } \div ( \sqrt{8} ) {}^{5} [/tex]
[tex] \sqrt{6 {}^{3} } \div ( \sqrt{6) {}^{5} } [/tex]
[tex]( \sqrt{0.4) {}^{ - 2} } \div ( \sqrt{ \frac{2}{5} } ) {}^{ - 3} [/tex]


Răspuns :

Răspuns:

Explicație pas cu pas:

1. (7^2)/7[tex]\sqrt{7}[/tex]=[tex](7^2)/7\sqrt{7}=7/\sqrt{7} =\sqrt{7}[/tex]

2. [tex]11/11\sqrt{11} =\sqrt{11}[/tex]

3 [tex][(1/3) \sqrt{1/3}]/(1/3)^2=\sqrt{1/3}[/tex]

4 [tex]8\sqrt{8} /8^2\sqrt{8} =1/8[/tex]

5.[tex]6\sqrt{6} /6^2\sqrt{6} =1/6[/tex]

6.[tex](1/0.4)/\sqrt{(5/2)^3}=(1/0.4)/(5/2)\sqrt{5/2}\\=(5/2)/(5/2)\sqrt{5/2} =\sqrt{5/2}/5/2[/tex]