The sum of three terms of an A.P. is 21 and the product of the first and the third terms exceeds the second term by 6, find three terms.

Explanation

To solve the problem step by step, we will follow the information given in the question and the video transcript.

### Step 1: Define the terms of the A.P.
Let the three terms of the A.P. be:
- First term: \( A - D \)
- Second term: \( A \)
- Third term: \( A + D \)

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