Question

5x² – 5x – 10 = 0 correct to 2 decimal places ​

Answer 1

Step-by-step explanation:

5x²- 5x - 10 = 0

comparing with ax²+bx+c=0 we have, a = 5, b = -5, c = -10

Using Quadratic Formula,

$x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a}$

$x = \frac { - ( - 5)± \sqrt{( { - 5})^{2} } - 4 \times 5 \times ( -10) }{2 \times 5}$

$x = \frac{ 5± \sqrt{225} }{10}$

$x = \frac{5±15}{10}$

$x = 2 \: or \: - 1$

This question doesn't in fractions value that's why decimal isn't exist.