Question 670279
{{{ (( 2x^2 - 1 )) / x^2 }}} and {{{ x = 2 }}}
{{{ (( 2*2^2 - 1 )) / 2^2 }}}
{{{ (( 8 - 1 )) / 4 }}}
{{{ 7/4 }}}
Is this the answer in the book?