znajdz długość boku (twierdzenie pitagorasa)
dodany załącznik
(2√2)² + x² =(2√5)²
4·2 + x² = 4·5
8 + x²= 20 /-8
x²= 12
x= √4·3 = 2√3
(2√2)² + 4² = x²
4·2 + 16= x²
8+16=x²
24=x²
x=√4·6 = 2√6
x² +1² = √5²
x² + 1 = 5 /-1
x²=4
x=√4 = 2
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(2√2)² + x² =(2√5)²
4·2 + x² = 4·5
8 + x²= 20 /-8
x²= 12
x= √4·3 = 2√3
(2√2)² + 4² = x²
4·2 + 16= x²
8+16=x²
24=x²
x=√4·6 = 2√6
x² +1² = √5²
x² + 1 = 5 /-1
x²=4
x=√4 = 2