[tex]Zadanie\\\\c)\\\\a=3\\b=3\sqrt{7}\\\\a^2+b^2=x^{2}\\\\3^2+(3\sqrt{7})^2=x^{2}\\\\9+63 =x^{2}\\\\72=x^{2}\\\\x=\sqrt{72}=\sqrt{36\cdot2}\\\\x=6\sqrt{2}\\\\d)\\\\a=6\\b=2\sqrt{3}\\\\a^2+b^2=x^{2}\\\\6^2+(2\sqrt{3})^2=x^{2}\\\\36+12=x^{2}\\\\48=x^{2}\\\\x= \sqrt{48}=\sqrt{16\cdot3}\\\\x=4\sqrt{3}[/tex]
[tex]e)\\\\a=6\\b=4\\\\a^2+b^2=x^{2}\\\\6^2+ 4^2=x^{2}\\\\36+16=x^{2}\\\\52= x^{2}\\\\x= \sqrt{52}=\sqrt{4\cdot13}\\\\x= 2\sqrt{13}\\\\f)\\\\b=2\sqrt{5}\\ c=2\sqrt{19}\\\\x^{2}+b^2 =c^2\\\\x^{2}+(2\sqrt{5})^2=(2\sqrt{19})^2\\\\x^{2}+20= 76\ \ \mid-20\\\\x^{2}=56\\\\ x= \sqrt{56}=\sqrt{4\cdot14}\\\\x=2\sqrt{14}[/tex]
