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Pls na jutro



[tex]( {x}^{3} - 5) + (4 - 5 {x}^{3})[/tex]


[tex] - ( {x}^{2} + 2xy) + ( - 3xy + {x}^{2} y[/tex]
Pls daje naj​


Odpowiedź :

Hej!

(x³ - 5) + (4 - 5x³) =

= x³ - 5 + 4 - 5x³ =

= -4x³ - 1

-(x² + 2xy) + (-3xy + x²y) =

= -x² - 2xy - 3xy + x²y =

= -x² + x²y - 5xy