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+ = = =
c)założenia x≠0 ∧ x≠ -3
+ = = =
e)założenia x≠3 ∧ x≠ -3
+ = = = = =
b) założenia x≠0 ∧ x≠ -2
- = = =
d) założenia x≠2
- 3 = =
f) założenia x≠4 ∧ x≠ -4
+ = = = =