Question

(ii) |x^2 - x - 2| = 2 + x - x^2
find x​

Answer 1

Answer:

=> |x2 - 2 - x| = 2 + x - x2

=> x2 - 2 - x = 2 + x - x2

=> x2 + x2 - 2 - 2 - x - x = 0

=> 2x2 - 4 - 2x

=> 2 ( x2 - 2 - x) = 0

=> x2 - 2 - x = 0

=> x2 - x -2 = 0

=> x2 + x - 2x - 2 = 0

=> x ( x + 1) -2 (x + 1)

=> (x + 1) (x - 2)

=> x + 1 = 0 => x - 2= 0

=> x = -1 => x = 2

Step-by-step explanation:

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