Question

14 इक्वेशन बाय फैक्टराइजेशन माइनस 5 एक्स स्क्वेयर माइनस 9 एक्स प्लस 8 इज इक्वल जीरो​

Answer 1

Answer:

$x_{1} = \frac{ - 9 - \sqrt{241} }{10} , x_{2} = \frac{ - 9 + \sqrt{241} }{10}$

Step-by-step explanation:

Change the signs on both sides of the equation.

$5x^{2} + 9x - 8 = 0$

Solve the quadratic equation.

$x = \frac{ - 9 - \sqrt{ {9}^{2} - 4 \times 5 \times ( - 8)} }{2 \times 5}$

Evaluate the power.

$x = \frac{ - 9 - \sqrt{81 + 160} }{10}$

Add the numbers.

$x = \frac{ - 9 - \sqrt{241} }{10}$

Write the solutions one with a + sign and one with a - sign. These are also the solutions of the equations.

$x = \frac{ -9 + \sqrt{241} }{10} \\ x = \frac{ -9 - \sqrt{241} }{10}$