6x^5 - 48x^3 = 0 Divide both sides by 6. You will get an equivalent equation x^5 - 8x^3 = 0. Factor it, talking x^3 out of parentheses x^3*(x^2-8) = 0. The roots are x= 0 (of the multiplicity 3), x == and x = = . ANSWER. The solutions are x= 0 (of the multiplicity 3); x= and x= .