Question

11. Which expression is equivalent to -2x + 5 ?10 - 4x - 5 + 2x3(2x + 1) - X-13x + 5- X - 10O -x - 9 + 4x + 4

Answer 1

Simplify each expression as follows:

`\begin{gathered} 10-4x-5+2x=10-5-4x+2x \\ =(10-5)+(-4x+2x) \\ =5-2x \end{gathered}`
`\begin{gathered} 3(2x+1)-x-1=3(2x)+3(1)-x-1 \\ =6x+3-x-1 \\ =6x-x+3-1 \\ =5x+2 \end{gathered}`
`\begin{gathered} 3x+5-x-10=3x-x+5-10 \\ =2x-5 \end{gathered}`
`\begin{gathered} -x-9+4x+4=-x+4x-9+4 \\ =3x-5 \end{gathered}`

Therefore, the only expression that is equivalent to -2x+5 is 10-4x-5+2x.