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2²+6²=z²
4+36=z²
40=z² / √
z=√40
z=2√10
e)
(3√3)²+(2√5)²=b²
(3*3)+(2*5)=b²
9+10=b² /√
19=b² c²
b=√19
f)
c²+3²=(√13)²
c²=13-9
c²=4 /√
c=2
4+z²=36
z²=36-4
z²=32
z=√32
z=4√2
e) (3√3)²+(2√5)²=b²
27+20=b²
47=b²
√47=b
f) 3²+c²=(√13)²
9+c²=13
c²=13-9
c²=4
c=2