Which of the following equations is not an identity equation?
A) $- 2 + \frac { 1 } { x + 1 } = \frac { - 2 x - 1 } { x + 1 }$
B) $- 2 ( x + 1 ) = - 2 x + 1$
C) $- ( - 2 - x ) = x + 2$
D) $\frac { 2 } { x } + \frac { 1 } { x } = \frac { 3 x } { x ^ { 2 } }$
E) $x ^ { 2 } - 2 ( x + 2 ) = x ^ { 2 } - 2 x - 4$

Question

Quizplus · Accepted Answer

Option B is not an identity equation because when simplified, $-2(x + 1)$ becomes $-2x - 2$, not $-2x + 1$.

Which of the Following Equations Is Not an Identity Equation −2+1x+1=−2x−1x+1- 2 + \frac { 1 } { x + 1 } = \frac { - 2 x - 1 } { x + 1 }−2+x+11​=x+1−2x−1​

Which of the Following Equations Is Not an Identity Equation $- 2 + \frac { 1 } { x + 1 } = \frac { - 2 x - 1 } { x + 1 }$