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Mathematics
Leticia
19 March, 12:29
Solve 1/3a2-1/a=1/6a2
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Isaias Arias
19 March, 16:22
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Solve for a over the real numbers:
a^2/3 - 1/a = a^2/6
Bring a^2/3 - 1/a together using the common denominator 3 a:
(a^3 - 3) / (3 a) = a^2/6
Cross multiply:
6 (a^3 - 3) = 3 a^3
Expand out terms of the left hand side:
6 a^3 - 18 = 3 a^3
Subtract 3 a^3 - 18 from both sides:
3 a^3 = 18
Divide both sides by 3:
a^3 = 6
Take cube roots of both sides:
Answer: a = 6^ (1/3)
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