Question 941997
{{{ ( 5x )^(-7) / ( 10x )^(-9) }}}
{{{ ( 1 / ( ( 5x )^7 ) )*( ( 10x )^9 ) }}}
{{{ ( 1 / ( ( 5x )^7 ) )*( 2^9*( 5x )^9 ) }}}
{{{ 2^9 * ( 5x )^2 }}}
{{{ 512*25x^2 }}}
{{{ 12800x^2 }}}
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