Rewrite the equation by completing the square. 4 x^{2} +20x +25 =0
2 answers:
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Answer:
Step-by-step explanation:
Given:
Consecutive Terms: k-5, k+7, k+55
Required:
Determine the value of k
To do this, we make use of the concept of common ratio.
The common ratio (r) of a geometric sequence is:
In other words:
Where 1, 2 and 3 represents the terms of the progression/sequence
So:
becomes
Cross Multiply:
Open Brackets
Collect Like Terms
Solve for k