To find the equivalent expression factor the given expression:
Common factor: -7x because -28x^2 is factor of -7x and 35x is also a factor of -7x.
Multiply all the expression for -7x and Divide both initial terms into -7x:
[tex]\begin{gathered} =-7x(\frac{-28x^2}{-7x}+\frac{35x}{-7x}) \\ \\ =-7x(4x-5) \end{gathered}[/tex]Then, the equivalent expression is the one in option G -7x(4x-5)