December 2018 1 65 Report
Usuń nawiasy i zredukuj wyrazy podobne.
a) (x+9y)+(x-9y-3)
b) (7-4b+3a)-(2a+4b-7)
c) -(3x+2y+z)+(4x-3z-3y)+(-2y-3z+x)
d) (3x+8y+z)-(4x+3y-2z)-(-2x+5y-5z)
e) (2x^2+3x+4)-(-7+4x-3x^2)-(x^2-5x+2)
f) (x^3+4x-2)+(-2x^3-3x+4)
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