Z wzoru z Twierdzenia Pitagorasa oblicz (podaje gotowe zadanie) (2pierwiastki z 6) do kwadratu +x do kwadratu =(3 pierwiastkiz 5 ) do kwadratu na szybko
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(2√6)²+x²=(3√5)²
24+x²=45
x²=21
x=√21 ∨ x=-√21