Question

sqrt{x (x-2)}-x =-10?

Answer 1

x (x-2)>0
sqrt{x (x-2)}=x-10 /take the square
x(x-2)=x^2-20x+100
18x=100
x=100/18=50/9
Check
sqrt50/9*(32/9)=40/9
40/9-50/9=-10/9
Did something wrong :-)

Answer 2

Cannot see the mistake, too tired I guess

Answer 3

I guess it means that it has no solutions

Answer 4

andras u did it right

Answer 5

thanks a lot