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Exercitiul 18 si 19 va rog

Exercitiul 18 Si 19 Va Rog class=

Răspuns :

2a²-6a²+30a²-12a²+8a²=22a²
7x³-4x³+6x³-6x³-5x³=-2x³
-6x²y²+12x²y²-12x²y²=-6x²y²

-6x+2ax
ax+2ay²
-2nx+nm-3np
(25a+24x-y)/15*15b=b*(25a+24x-y)