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Multiple Choice Questions
1. Which of the following equations has 3 as a root?
(A): $$x^{2}-7x+12 = 0$$
(B): $$x^{2}-5x+12=0$$
(C): $$x^{2}+ 3x + 12 = 0$$
(D): $$x^{2}+3x -12 = 0$$
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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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SSC CHSL 10 Jan 2017 Afternoon Shift
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