Help fast please

Is a square always, sometimes, or never a parallelogram

If /is a line of symmetry, plot the partner points for the ones shown. noch 6 5 4 -3 -2 -1

Urgent question in mathematics. solve this to get 15 points[tex] {2}^{100} - {2}^{99} - {2}^{98} {2}^{2} - {2}^{1} - {2}^{0}[/tex]a) 0 b) 1 c) 2 d) 2^50