GP - three members

The second and third of a geometric progression are 24 and 12(c+1), respectively, given that the sum of the first three terms of progression is 76. determine the value of c.

Correct answer:

c1 =  2
c2 =  0.3333

Step-by-step explanation:

Our quadratic equation calculator calculates it.

q=(c2+1)/2=(0.3333+1)/2=320.6667 a11=a2/q=24/0.6667=36 a33=a2 q=24 0.6667=16 s3=a11+a2+a33=36+24+16=76 s3=s2=s c2=0.3333

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