Odpowiedź :
[tex]b^2=(10\sqrt2)^2-10^2\\\\b^2=10^2\cdot(\sqrt2)^2-100\\\\b^2=100\cdot2-100\\\\b^2=200-100\\\\b^2=100\\\\b=\sqrt{100}\\\\\huge\boxed{b=10}[/tex]
Odpowiedź:
[tex]b ^{2} + 10 ^{2} = 10 \sqrt{2 {}^{2} } [/tex]
[tex]b {}^{2} + 100 = 28[/tex]
[tex]b {}^{2} = 100 - 28 [/tex]
[tex]x {}^{2} = 72[/tex]
[tex]x = \sqrt{72} [/tex]