Question

Calcule:
1-(x+1/2)3
2-(2x-1/x)3
3-(x+1/x)3
4-(a2+ab)3
5-(2a+1)2-(2a+1)3

Answer 1

1) 1
X+ ---
8

2) 2X (Elevado a 4) -1
-------------------------------
X (Elevado a 3)

3) X (Elevado a 4) +1
-------------------------------
X (Elevado a 3)

4) a (Elevado a 6) + 3a (Elevado a 5) b + 3a (Elevado a 4) b (Elevado a 2) + a (Elevado a 3) b (Elevado a 3)

5) 2a× (2a+1) (Elevado a 2)