Szczegółowe wyjaśnienie:
ZADANIE 6.
Oblicz
A.
[tex]3( \sqrt{7} ) {}^{2} = 3 \cdot7 = 21[/tex]
B.
[tex]2 \sqrt{8} \cdot3 \sqrt{8} = 2 \cdot8 \cdot3 = 48[/tex]
C.
[tex]( \frac{3}{4} \sqrt{6} ) {}^{2} = ( \frac{3 \sqrt{6} }{4} ) {}^{2} = \frac{9 \cdot6}{16} | : 2 = \frac{9 \cdot3}{8} = \frac{27}{8} [/tex]
