Solve the equation  –x2 + x – 2 = 0

Asked by Abhisek | 2 years ago |  134

1 Answer

Solution :-

Given quadratic equation,

–x2 + x – 2 = 0

On comparing it with ax2 + bx + c = 0, we have

a = –1, b = 1, and c = –2

So, the discriminant of the given equation will be

D = b2 – 4ac = 12 – 4 × (–1) × (–2) = 1 – 8 = –7

Hence, the required solutions are:

\( \dfrac{-b\pm\sqrt{D}}{2a}\)

\( \dfrac{-1\pm\sqrt{-7}}{2\times -1}\)

\( \dfrac{-1\pm\sqrt{7i}}{-2}\)

Answered by Pragya Singh | 2 years ago

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