Answer:
-2, 0, and 5
Explanation:
3x³ − 9x² = 30x
Move everything to one side:
3x³ − 9x² − 30x = 0
Factor out the greatest common factor (in this case, 3x):
3x (x² − 3x − 10) = 0
Factor the quadratic:
3x (x − 5) (x + 2) = 0
Set each factor to 0 and solve:
3x = 0 → x = 0
x − 5 = 0 → x = 5
x + 2 = 0 → x = -2
Possible solutions are x = -2, x = 0, and x = 5.