a fost răspuns

PR
a) x-x+x;
Aduceţi la forma cea mai simplă:
b) 2a3 – a + a3 - 4a?;
c) 2x - x + 3x2 + 15 - 2,5x+0,5x3 – x2;
d) 14x + 2xy – 2x + 5, (6)x - 3xy;
+5a - 2xy - 0,5xy2 + 7xy - 9x2 -
2 xy2 - 1,8(3)x2
12
3
-a -​

Răspuns :

a)x(1-1+1)=x
b)a3(2+1)-a(1+4)=3a3-5a
c)x(2-1-2,5)+x2(3-1)+0,5x3=-1,5x+2x2+0,5x3
d)x(14-2+5,(6)+xy(2-3-2)+a(5-3)-xy2(0,5-2)-x2(9+1,8(3))=(12+5,(6))x+3xy+2a-1,8xy2-(9+1,8(3))x2

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