b7*b3=b5^2 b7=b5^2/b3=64/6=32/3
q^2=b5:b3, q^2=8:6= 4/3, q1=-2/√3, q2=2/√3,
b1=b3:q^2, b1= 6: 4/3=9/2
b7=b1*q^6, b7=9/2*(2/√3)^6=9/2*64/81=32/9
b7*b3=b5^2 b7=b5^2/b3=64/6=32/3
q^2=b5:b3, q^2=8:6= 4/3, q1=-2/√3, q2=2/√3,
b1=b3:q^2, b1= 6: 4/3=9/2
b7=b1*q^6, b7=9/2*(2/√3)^6=9/2*64/81=32/9