Solve and choose the correct set of roots.

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

Solve

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

and choose the correct set of roots. (a)

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

(b)

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

(c)

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

(d)

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