Question

(2x-1/3x)^2
Expand each of the following
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Answer 1

Answer:

$2x - ( \frac{ 1}{3x}) { }^{2} \\ \: \: \: (a + b) {}^{2} = a + 2ab - b \\ 2x - 2(2x)( - \frac{1}{3x} ) + ( - \frac{1}{3x} ) \\ 2x - 2( \frac{2x}{3x} ) - \frac{1}{3x} \\ 2x - (\frac{2x}{3x}) {}^{2} - \frac{1}{3x}$