Need quick asap help with a math problem. Are their any other equations that are equivalent?

[tex] \boxed {9x^{2} + 28x-32} [/tex]
9x * x = 9x[tex] ^{2} [/tex]
9x * 4 = 36x
-8 * x = -8x
-8 * 4 = -32
Combine like terms.
36x - 8x = 28x
The answer would be the fourth option.