Question

Graph x^3 + 3x^2 − x − 3 = 0. What are the solutions to the equation?

x = −3, x = 0, and x = 1



x = −3, x = −1, and x = 0



x = −3, x = −1, and x = 1



x = −1, x = 1, and x = 3

Answer 1

x = −1, x = 1, and x = - 3

Explanation:

hello :

if : x=1 1^3 + 3×1^2 − 1 − 3 =1+3-1-3 =4-4=0......true

if : x=-1 (-1)^3 + 3×(-1)^2 +1− 3 =-1+3.+1-3.=0...true

if : x=3 (-3)^3 + 3×(-3)^2 + 3 − 3 =-27+27+3-3.=0.....true