Two girl's numbers

Dagmar and Julka had numbers. Dagmar's number was equal to the square root of Julka's number. The sum of Dagmar's and Julka's numbers equals 84. Find what number Dagmar and Julka had.

Correct answer:

d =  3
j =  81

Step-by-step explanation:

d4 = j d+j = 84 d=3
j=84d=843=81



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