Question

49
21 22
28 29
divide 36oyz by
-9x2​

Answer 1

$\setlength{\unitlength}{1 cm}\begin{picture}(12,8)\put(1,0){\vector(-1,0){1}}\put(2,0){\vector(1,0){2}}\put(1,0){\line(1,0){1}}\put(3,0){\line(-1,2){2}}\put(1,4){\vector(-1,0){1}}\put(2,4){\vector(1,0){2}}\put(1,4){\line(1,0){1}}\put(3,4){\line(0,-1){4}}\put(2.8,1.5){ 90^{\circ}}\end{picture}$