Cześć!
a)
[tex]4( \sqrt{3} ) {}^{2} = 3 \cdot4 = 12[/tex]
b)
[tex](2 \sqrt{2} ) {}^{2} = 4 \cdot2 = 8[/tex]
c)
[tex] \sqrt{7} \cdot3 \sqrt{7} = 7 \cdot3 = 21[/tex]
d)
[tex]2 \sqrt{3} \cdot5 \sqrt{3} = 2 \cdot3 \cdot5 = 30[/tex]
e)
[tex]( \frac{2 \sqrt{5} }{5} ) {}^{2} = \frac{4 \cdot5}{25} = \frac{4}{5} [/tex]
f)
[tex]( \frac{3}{2} \sqrt{6} ) {}^{2} =( \frac{3 \sqrt{6} }{2} ) {}^{2} = \frac{9 \cdot6}{4} = \frac{9 \cdot3}{2} = \frac{27}{2} = 13 \frac{1}{2} [/tex]
g)
[tex]( - 0.1 \sqrt{10} ) {}^{2} = ( - 0.1) {}^{2} \cdot10 = 0.1 {}^{2} \cdot10 = 10 {}^{ - 2} \cdot10 = 10 {}^{ - 1} = \frac{1}{10} [/tex]
h)
[tex] - 3 \sqrt{15} \cdot2 \sqrt{15} = - 3 \cdot15 \cdot2 = - 90[/tex]
