find the value of 216a3_343b3 when 6a_7b=11 and ab=8
Answers
Answered by
4
Answer:
12419
Step-by-step explanation:
6a-7b = 11
Cubing both sides
(6a-7b)^3=11^3
216a3 - 343b3 - 3 x 6a x 7b (6a-7b)= 1331
216a3 - 343b3 = 1331 + 3 x 6a x 7b (6a-7b)
= 1331 + 126ab (11)
= 1331 + 126 x 8 x 11
= 1331 + 11088
= 12419
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Answered by
0
Answer:
1222456844334567990556799
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