Wykonaj działania : -5x do 2 + 3x(x-1)+(2x-1)(x+3) Uprość wyrażenie : (2y-3) do 2 -(3y-2)(3y+2) Rozwiąż równianie : (x-5)(x+5) = x do 2 -100x
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-5x do 2 + 3x(x-1)+(2x-1)(x+3)=-5x²+3x²-3x+2x²+6x-x-3=2x-3
(2y-3) do 2 -(3y-2)(3y+2=4y²-12y+9-9y²+4=-5y²-12y+13
(x-5)(x+5) = x do 2 -100x
x²-25=x²-100x
-25=-100x
x=¼
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