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A) 0,3333... + 0,4444...
B) [(2,25).(-2,45)]:(0,001)-75
C) 9.(0,333...)-99.(3,444)
D)(√0,333...).√81/25
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A) 0,333... +0,4444… = 1/3+4/9= 3/9+4/9=7/9
B) (5,5125)÷0,001 - 75 = 5512,5-75= 5437,5
C) 9×(1/3) - 99×(31/9) = 3 - 341 = -338
D) (√1/3)×(9/5)=(9×√1)/(5×√3)=9/5√3=(9√3)/(5×3) = 3√3/5
B) (5,5125)÷0,001 - 75 = 5512,5-75= 5437,5
C) 9×(1/3) - 99×(31/9) = 3 - 341 = -338
D) (√1/3)×(9/5)=(9×√1)/(5×√3)=9/5√3=(9√3)/(5×3) = 3√3/5
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