find the real number solutions of the equations

Question

X^3-3X^2=0

Answer 1

x^3-3x^2=0

x^2(x - 3) = 0

x^2 = 0                      or x = 3

check

0^3 -3(0) = 0 yes        3^3 - 3 (3^2) = 0

                                   27 - 27 = 0 yes

Answer 2

What is the inver's laplas funtion of  (3s-s)/(2s^2-6s-2)     and (s+7)/(s^2-3s-10)