A) \[x-1=0\]
B) \[x+1=0\]
C) \[x-2=0\]
D) \[x+2=0\]
Correct Answer: B
Solution :
| \[x+1=0\] |
| \[\Rightarrow x+1-1=0-1\] |
| [Subtracting 1 from both sides] |
| \[\Rightarrow x=-1\] ...(i) |
| and \[2x+2=0\Rightarrow 2x+2-2=0-2\] |
| [Subtracting 2 from both sides] |
| \[\Rightarrow 2x=-2\Rightarrow x=-1\] ?(ii) |
| Thus, from (i) and (ii), Both equations have the same solution. |
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