Odpowiedź :
Odpowiedź:
[tex]\sqrt{63}=\sqrt{9\cdot7}=\sqrt9\cdot\sqrt7=3\cdot\sqrt7=\boxed{3\sqrt7}\\\\\sqrt{40}=\sqrt{4\cdot10}=\sqrt4\cdot\sqrt{10}=2\cdot\sqrt{10}=\boxed{2\sqrt{10}}\\\\\sqrt{28}=\sqrt{4\cdot7}=\sqrt4\cdot\sqrt7=2\cdot\sqrt6=\boxed{2\sqrt7}\\\\\sqrt{200}=\sqrt{100\cdot2}=\sqrt{100}\cdot\sqrt2=10\cdot\sqrt2=\boxed{10\sqrt2}[/tex]
a)
[tex] \sqrt{63} = \sqrt{9 \times 7} = \sqrt{9} \times \sqrt{7} = 3 \sqrt{7} [/tex]
b)
[tex] \sqrt{40} = \sqrt{4 \times 10} = \sqrt{4} \times \sqrt{10} = 2 \sqrt{10} [/tex]
c)
[tex] \sqrt{28} = \sqrt{4 \times 7} = \sqrt{4} \times \sqrt{7} = 2 \sqrt{7} [/tex]
d)
[tex] \sqrt{200} = \sqrt{100 \times 2} = \sqrt{100} \times \sqrt{2} = 10 \sqrt{2} [/tex]