Ile to jest:
3x^{3}- x^{3}?
-2x^{2-}2x^{2}?
Z góry dzięki
3x^3- x^3=2x^3
-2x^2-2x^2=-4x^2
3x^{3}- x^{3}=2x^3
-2x^{2}-2x^{2}=-4x^{2}
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3x^3- x^3=2x^3
-2x^2-2x^2=-4x^2
3x^{3}- x^{3}=2x^3
-2x^{2}-2x^{2}=-4x^{2}