How do you solve $9/c^2-1/4c=2/c$ ?

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Answer 1 · 2018-05-27T11:03:32

$c=2.51396$

$9/c^2-c/4=2/c$

Multiplying by $c^2$ both sides, we get,

$9-c^3/4=2c$

$36-c^3=8c$

Drawing the graph of the above cubic equation, we get,

graph{x^3+8x-36 [-8.89, 8.89, -4.44, 4.45]}

$c=2.51396$

How do you solve 9/c^2-1/4c=2/c9/c^2-1/4c=2/c?