[tex]\underline{1. \ -5a-(-4)a^{3}-2b^{2} =-5a + 4a^{3}-2b^{2}}\\\\\underline{2. \ -5a+2a\cdot2a^{2}-2b^{2} = -5a+4a^{3}-2b^{2}}\\\\\underline{3. \ -5a+4a^{3}+2b(-b) = -5a+4a^{3}-2b^{2}}[/tex]
[tex]4. \ -5a+2a^{3}b^{2}\neq -5a+4a^{3}-2b^{2}\\\\5. \ 5a-4a^{3}-2b^{2} \neq -5a+4a^{3}-2b^{2}[/tex]
Odp. Wyrażenia: 1, 2 i 3.
