5m Zen
B x x )
B x x ) pictures 5
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B x
B x x )
x a )( x b )( x c formula
x a x b identity
x a x b formula
a b x x y
logb b x )u003d x
b x x 3 x 1 3
b x x 1
b x x 2
b x x )- 1 x y
b x x
