Answer:
No.
Step-by-step explanation:
The equation
[tex]3 {x}^{2} (x + 4) = 0[/tex]
is a cubic equation because, if we distribute 3x² over the parenthesis, we would have
[tex]3 {x}^{3} + 12 {x}^{2} = 0[/tex]
Since quadratic equations have 2 as the highest exponent, 3x³ + 12x² = 0 is NOT quadratic.
