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b) √30-5+³√0,0027:1,1= √25 + 0,3 :1,1= 5 + 3/11 = 5 3/11
c)√144-³√64:[(-3)²+(-1)³]=12 -4 :[9 -1] = 12 -4 : 8 = 12 - ½ = 11½
d)(3×√36-4׳√125):[(³√8)³-√4]=( 3*6 -4*5 ) : [8 -2] = (18 - 20) : 4 = -2:4 = -½