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Question

Find x, so that x,x+2,x+6 are consecutive terms of geometric progression.

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Solution

The ratio between consecutive terms is constant in geometric progression
x+2x=x+6x+2
(x+2)2=x(x+6)
x2+4x+4=x2+6x
2x=4
x=2

1226893_1398155_ans_c8c252e83262454ba3ed37a90c730b84.jpg

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