Question 354353
{{{ F(x)=x^2 + 3/x^3 - 8x }}}
{{{ F(4)=4^2 + 3/4^3 - 8*4 }}}
{{{ F(4)=16 + 3/64 - 32 }}}
{{{ F(4)=16(64/64) + 3/64 - 32(64/64) }}}
{{{ F(4)=1024/64 + 3/64 - 2048/64 }}}
{{{ F(4)=(1024 + 3 - 2048)/64 }}}
{{{ F(4)= -1021/64 = -15 (61/64)}}}