Oblicz:
x = 2x
x-9 x-2
(Pod x i 2x jest kreska ułamkowa)
mnozymy na krzyż czyli
x (x-2) = (x-9)x2x
x2 - 2x=2x2-18x
x2-2x2-2x+18x=0
-x2+16x=0
x(-x+16)=0
x=0 -x+16=0 x-=16
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mnozymy na krzyż czyli
x (x-2) = (x-9)x2x
x2 - 2x=2x2-18x
x2-2x2-2x+18x=0
-x2+16x=0
x(-x+16)=0
x=0 -x+16=0 x-=16