Question

xsquare+9x+1=0 solved the equation​

Answer 1

Answer:

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Answer 2

x² + 9x + 1 = 0

__________ [ GIVEN ]

• We have to find the value of x.

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We know that..

» $x \: = \: \frac{ - b \: \pm \: \sqrt{ {b}^{2} \: - \: 4ac} }{2a}$

(Quadratic formula)

Here.. a = 1, b = 9 and c = 1

→ $x \: = \: \frac{ - 9 \: \pm \: \sqrt{ {(9)}^{2} \: - \: 4(1)1(1)} }{2(1)}$

→ $x \: = \: \frac{ - 9 \: \pm \: \sqrt{ 81 \: - \: 4} }{2}$

→ $x \: = \: \frac{ - 9 \: \pm \: \sqrt{77} }{2}$

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$x \: = \: \dfrac{ - 9 \: \pm \: \sqrt{77} }{2}$

_________ [ ANSWER ]

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