a.) 4·(-2 ¼)⁸·(1/9)⁸+(1/4)¹²:(-1/4)⁴·5
______________________________________=
(-1,25)⁶·(1/5)⁶·0,15
b.) -7·[(-3/5)¹⁸:(0,3)¹⁷]-0,2·(1/2)¹⁷:(-1/4)¹⁸
_______________________________________=
0,4·(-2)⁸·(-2)⁷+(-2)¹⁴
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