Question

1)x(x+5)=104
2)x-5/x=(x-1)+4/x

Answer 1

1)x²+5x-104=0
D=441=21²
x=-5±21/2
x=-13 x=8
2)x-5/x=(x-1)+4/x |*x
x²-5=x²-x+4
x=9