Question 415526
{{{ (-4 - sqrt(-3))*(-4 + sqrt(-3)) }}}
Since {{{sqrt(-1) = i}}}
{{{ (-4 - sqrt(3)*i)*(-4 + sqrt(3)*i) }}}
{{{16 + 4*sqrt(3)*i - 4*sqrt(3)*i - 3*i^2 }}}
{{{16 - 3*(-1)}}}
{{{16 + 3 = 19}}} answer