⇒

is a improper fraction.

as a mixed number would be 4

⇒10 x 4 = 40
⇒40 + 9 = 49

= 4
⇒ANSWER = 4
-x -2 I think . 3-(-5)= -2 and 2x -3x = -x
Step-by-step explanation:
304
plug 4 in for x
3(4)^2 + 4(4)^3 = 304
48 + 256 = 304
-2*4=-8
-8 is the correct answer