Mister Exam

(2x-2)/(x+1) canonical form

The teacher will be very surprised to see your correct solution 😉

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The solution

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-2 + 2*x    
-------- = 0
 1 + x      
$$\frac{2 x - 2}{x + 1} = 0$$
(2*x - 2)/(x + 1) = 0