Temat:
MatematykaAutor:
tiffany94Utworzono:
1 rok temuZad. 13
a)
[tex]\sqrt{2} \cdot \sqrt{6} =\sqrt{2 \cdot 6} = \sqrt{12} =\sqrt{4 \cdot 3} =2\sqrt{3}[/tex]
b)
[tex]2\sqrt{3} \cdot \sqrt{18} = 2\sqrt{3} \cdot \sqrt{9 \cdot 2} = 2\sqrt{3} \cdot 3 \sqrt{2} = 6\sqrt{3 \cdot 2}=6\sqrt{6}[/tex]
c)
[tex]7\sqrt{10} \cdot \frac{1}{2} \sqrt{5} =\frac{7}{2}\sqrt{10 \cdot 5} =\frac{7}{2}\sqrt{50} = \frac{7}{2}\sqrt{25 \cdot 2} =\frac{7}{2} \cdot 5\sqrt{2} =\frac{35}{2}\sqrt{2} =17\frac{1}{2}\sqrt{2}[/tex]
d)
[tex]\sqrt{50} + \sqrt{2}=\sqrt{25 \cdot 2} + \sqrt{2}=5\sqrt{2} + \sqrt{2}=6 \sqrt{2}[/tex]
e)
[tex]\sqrt{300} -2\sqrt{3}=\sqrt{100 \cdot 3} - 2\sqrt{3}=10\sqrt{3} - 2\sqrt{3}=8 \sqrt{3}[/tex]
f)
[tex]-2\sqrt{32} -2\sqrt{8}=-2\sqrt{16 \cdot 2} -2\sqrt{4 \cdot 2}=-2 \cdot 4\sqrt{2} -2 \cdot 2\sqrt{2}=-8\sqrt{2} -4\sqrt{2}= \\ = -12\sqrt{2}[/tex]
Autor:
luisvrbd
Oceń odpowiedź:
10