The null space for the matrix

$\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\!\strut\\\end{array}}\right[$ 1 7 -2 14 0 $\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\!\strut\\\end{array}}\right]$ 3 0 1 -2 3 6 1 -1 0 4

is span{A,B} where

${\rm A} =$

$\left[\Rule{0pt}{6em}{0pt}\right.$$\left]\Rule{0pt}{6em}{0pt}\right.$

${\rm B} =$

$\left[\Rule{0pt}{6em}{0pt}\right.$$\left]\Rule{0pt}{6em}{0pt}\right.$