Question

in a two-digit number, the digit at the units place is equal to the square of the digit at the tens place. if 54 is added to the number, the digits get interchanged. find the number.​

Answer 1

Answer:

39 , 93

Step-by-step explanation:

Let the tens number be x

the units place no be y

y=x²

10x+y +54 =10y+x

9y -9x =54

y-x = 6

we put y=x² in above eqn

x²-x=3×2

x(x-1) =3×2

x= 3

y =9