Answer:
If you are asking,
5x - 4x^2=0
x(5-4x)=0
Either,
x=0
or,
5-4x=0
x=5/4
If factor,
5x - 4x^2
x(5-4x)
If difference,
5x - 4x^2
The same as they are not like terms.
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
All I know is 5 and 6.
5. -7 (the picture is the model to draw)
6. -5
4x^2+9x-(x^2-6x+9)+11
4x^2+9x-x^2+6x-9+11
3x^2+15x+2