Answer:
I believe it would be -5x^2
Step-by-step explanation:
[2x^2-3x+5] - [4x^2-5x+10]
2-3
-1
-1x+ x
x^2+5
5x
(4x^2-5x+10)
4-5
-1x+x
x^2+10
10x^
5x^2+10x^2 = -5x^2
