Plz solve both the sums asap..plz
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https://www.meritnation.com/ask-answer/question/quadratic-equations/quadratic-equations/2053820
https://www.meritnation.com/ask-answer/question/if-a-cyclist-had-gone-3km-hr-faster-he-would-have-taken-1ho/quadratic-equations/6936512