The given equation is,x2 + x - 4 = 0Now, a = 1; b = 1; c = -4Now, D = b2 - 4ac = 12 - 41-4 = 1 + 16 = 17 >0Now, x = -b±D2a = -1±172Now, E = -1 + 172, -1 - 172

E={x:x^2+x-4=0}

The given equation is, x^{2} + x - 4 = 0 Now, a = 1; b = 1; c = - 4 Now, D = b^{2} - 4 ac = {(1)}^{2} - 4 (1) (- 4) = 1 + 16 = 17 > 0 Now, x = \frac{- b \pm \sqrt{D}}{2 a} = \frac{- 1 \pm \sqrt{17}}{2} Now, E = \{\frac{- 1 + \sqrt{17}}{2}, \frac{- 1 - \sqrt{17}}{2}\}

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