Основание позиционной системы счисления х, при котором 101х = 505у, равно​

101ₓ=1*х^2+0*x+1*x^0

505ₓ=5*y^2+0*y+5*y^0

x^2+1=5y^2+5

-5y^2+x^2-4=0

x=3

y=1

var

i,j,k: integer;

a,b,c: array [1..30] of integer;

begin

randomize;

j: =0;

k: =0;

for i: =1 to 30 do

begin

a[i]: =random(80)-30;

if a[i] mod 2 =0 then

begin

j: =j+1;

b[j]: =a[i]

end

end;

for i: =30 downto 1 do

if a[i]< 0 then

begin

k: =k+1;

c[k]: =a[i];

end;

for i: =1 to j do

writeln(b[i]);

for i: =1 to k do

writeln(c[i]);

end.

var

x,y: real;

begin

x: =-1;

while x< =1 do

begin

y: =x*x*x;

writeln(y);

x: =x+0.1;

end;

end.