Simplify.

a) [[$ x^2 \cdot x^5 \cdot \displaystyle\frac {1} {x^4} $]]

b) [[$ x^4 \cdot x \cdot \displaystyle\frac {1} {x} $]]

c) [[$ \displaystyle\frac {1} {x^6} \cdot \displaystyle\frac {1} {x} \cdot x^5 $]]

d) [[$ x^2 \cdot x^4 \cdot \displaystyle\frac {x^3} {x^5} $]]

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Solution