1. Which of the following equations has 3 as a root?





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  • By: anil on 05 May 2019 02.17 am
    (A) : $$x^{2}-7x+12 = 0$$ => $$x^2 - 4x - 3x + 12 = 0$$ => $$x(x - 4) - 3(x - 4) = 0$$ => $$(x-4)(x-3) = 0$$ => $$x = 3,4$$ => Ans - (A)
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