OBLICZ:
a) √25 - √9 - √25-9
b) √225-144 + √225- √144
c) √324 + √576 - √324+576
d) √144 + 256- √144- √256
wyniki:
a) -2
b) 12
c) 12
d) -8
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a)5-3-4 =-2
b) 9+(15-12 )= 12
c) (18+ 24 )- 30
d) 20- 12-16 =-8