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a²+b²=c²
x²+b²=(x+2)²
x²+b²=x²+4x+4
b²=4x+4
b²=4(x+1)
b=2√(x+1)
a=x
b=2√(x+1)
c=x+2
(x+2)²=y²+x² ; tw.Pitagorasa
x²+2x+4-x²=y²;
y²=2x+4;
y=√2x+4;
x² +b² = (x +2)(x+2)
x² + b²= x² + 4x +4
b²= 4x + 4
b= √ 4x +4
b= 2√ x+ 1
a= x
b= 2√ x+ 1
c= x+ 2