ICSE Class 8 Answered
If 5p-4q=7and pq=6 find 125p^3-64q3
Asked by Gillgurwinder80 | 13 Sep, 2018, 12:44: PM
Expert Answer
5p - 4q = 7and pq = 6 find 125p3 - 64q3
(5p - 4q)3 = 73
125p3 - 3×5p×4q (5p - 4q) - 64q3 = 343
125p3 - 60pq (5p - 4q) - 64q3 = 343
Put the given values and you will get the answer.
Answered by Sneha shidid | 13 Sep, 2018, 06:44: PM
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