Найдите знаменатель геометрической прогрессии,если b3=12,b5=48
b1*q^2=12
b1*q^4=b5
48*q^2=12*q^4
4q^2=q^4
q^2=4
q=2
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b1*q^2=12
b1*q^4=b5
48*q^2=12*q^4
4q^2=q^4
q^2=4
q=2