5m Zen
X 4 9x 2 20
X 4 9x 2 20 pictures 5
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X 4 9x 2 20
u0440u0435u0448u0438u0442u0435 u0443u0440u0430u0432u043Du0435u043Du0438u0435 x 4 9x 2 20 0
y 4 - x 2 9x 20
20 3 x 2 )u003d 9x 4
x 2 4x 4 x 2 9x 20 )u003d 1
x 2 9x 20 divided by x 4
f x )u003d x 4 9x 2 20
x 4 9x 2 20 0
x 4 9x 2 20
