If a/b + b/a = -1, then the value of a³ - b³ is?
Please don't give wrong answer or I will report.
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Answer:
-2a^2b - 2ab^2
Step-by-step explanation:
a/b + b/a = -1
a^2 + b^2 whole / ab = - 1
a^2 + b^2 = -ab
°°°°°°°°°°°°°°°°
a^3 + b^3 = (a+b)(a^2 + b^2 - ab)
(a+b) (-ab-ab)
(a+b) (-2ab)
Sorry my copy isn't with me
So, i hope you are able to understand...
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