Given quadratic equation,
2x2 + x + 1 = 0
On comparing it with ax2 + bx + c = 0, we have
a = 2, b = 1, and c = 1
So, the discriminant of the given equation will be
D = b2 – 4ac = 12 – 4 × 2 × 1 = 1 – 8 = –7
Hence, the required solutions are:
\( \dfrac{-b\pm\sqrt{D}}{2a}\)
= \( \dfrac{\pm\sqrt{-7}}{2\times 2}\)
= \( \dfrac{\pm\sqrt{7i}}{4}\)
Answered by Pragya Singh | 1 year agoShow that 1 + i10 + i20 + i30 is a real number?
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