Tricky Maths Question for Competitive Exams | How to solve?

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[@joseeoliviero6078]

My gut instinct was to approach it using your method 3 by pulling the imaginary number out first. However I'm confused as to why.... Taking "-1" out, results in +and- solution. Why does taking the negative one out, results in a positive/negative (similar to a sqrt)

[@RealQinnMalloryu4]

(2)+( ➖ 2)=4 (x ➖ 2x+2).

[@Kshitij.with.nature-channel]

2 nd method was quickest, how do we know that before solving

[@MathBeast.channel-l9i]

Thanks for sharing your precious feedback 🙂