exam Maths Puzzle Numerical Ability

On page #588, question #20, I need to solve the quadratic formula and state if there are no real roots or not. Can someone please help?

3x^2-4x+2=0

Thanks for your help!

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exam Other Question

mohan can mow a piece of land in 4hrs. Kumar can mow it in 3hrs. Mohan can started mowing lawn all by himself and an hour later kumar joined with him together they finished mowing the lawn in total? Howlong did it take to move the lawn? 7x^2-y-2x=0 solve for y.