5m Zen
16 x power 4
16 x power 4 pictures 5
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16 x power 4
x power 4 4 x square 16
x to the power 4 16 x 2
4 power 2x 1 16 power x 1
x 2 x 4 16 power series
16 x power 4 81 y power 4
16 x power 4
16 x power 4 minus y power 4
16 x power 4 81
16 x power 4 54 x
16 x power 4 1
