Question

Raționalizați numitorii:
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Answer 1

Răspuns:

Explicație pas cu pas:

14/√2 = 14√2/2 = 7√2

-15/√5 = -15√5/5 = -3√5

-24/√8 = -24√8/8 = -3√8

16/√32 = 16√32/32 = √32/2 = 4√2/2 = 2√2

-36/√27 = -36√27/27 = -4*3√3/3 = -4√3

24/√12 = 24√12/12 = 2√12

-45/√75 = -45√75/75 = -9*5*5√3/75 = -3√3

√63/3√7 = √9/3 = 3/3 = 1

__________________

18/3√2 = 6/√2 = 6√2/2 = 3√2

-48/√56 = -48√56/56 = -6√56/7 = -12√14/7

√72/8√6 = 6√2/8√6 = √6*√2/8 = √12/8 = 2√3/8 = √3/4

-60/√75 = -60/5√3 = -12/√3 = -12√3/3 = -4√3

-64/√48 = -64/4√3 = -16√3/3

-56/√84 = -56/2√21 = -28/√21 = -28√21/21 = -4√21/3

48/3√12 = 16/√12 = 16√12/12 = 16*2√3/12 = 32√3/12 = 8√3/3

-45/√60 = -45/2√15 = -45√15/2*15 = -3√15/2