-x+3x+4=0
L ^-1{5s^2+3s-16/(s-1)(s-2)(s+3)}
(3x-7)[3(x+1)-2(x+3)]-2x(x+6)=
19-16* $\frac{\8}{\5}$
17-16* $\frac{\6}{\5}$
(3x-7)[3(x+1)-2(x+3)]-2x(x+6)
593/2
18-16* $\frac{\7}{\5}$
20000-50
x³+x=1 x=?
