zredukuj wyrazy podobne :
a. -3x do kwadratu - 5x+x do kwadratu -2x+3 =
b. 3xy-2x do kwadratu y+5xy kwadrad -5xy-x kwadrad y - x kwadrad y =
c. 1 3/4 a do kwadratu b+1/3 a kwadrad b kwadrad - 4/9 ab kwadrad =
d. -2,27 x - 1,3 x kwadrat - 3,3 x kwadrad + 1,77 x =
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A) -3x²-5x+x²-2x+3= -2x²-8x+3
B) 3xy-2x²y+5xy²-5xy-x²y-x²y = -2xy-4x²y+5xy²
C) 1¾a²b +⅓a²b²-⁴/₉ab²
D) -2,27x-1,3x²-3,3x²+1,77x= -0,5x-4,6x²
a)
-3x²-5x+x²-2x+3 = -2x²-7x+3
b)
3xy-2x²y+5xy²-5xy-x²y-x²y = -4x²y-2xy+5xy²
c)
1 3/4a²b+1/3a²b²-4/9ab² ⇒ bardziej zredukować się nie da
d)
-2,27x-1,3x²-3,3x²+1,77x = -4,6x² -0,5x