Quadratic equation trick||solve in 5 seconds||Bank exams||SBI CLERK||

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Correction:
By mistake i have spoken "roots" instead of "sign"... that's a correction..sorry for that.

timetogrowsbija
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Kya bhat hai sir ji very nice trick thank you so much isi bat pr me aap ko 10 subscribers de rha hu keep it up

rohitbijarnia