Mathematics

Problem

Solve

2x^{2}+x-7=0

and choose the correct set of roots. a)

x=\dfrac{1\pm\sqrt{57}}{4}

x=\dfrac{-1\pm\sqrt{57}}{4}

x=\dfrac{-1\pm\sqrt{57}}{2}

x=\dfrac{-1\pm\sqrt{29}}{4}