Question

0
x² - 16x - 11 =0
find x
​

Answer 1

Step-by-step explanation:

D = b^2 - 4ac

= - 16^2 - 4 * - 11 * 1

= 256 + 44

= 300

By quadratic formula,

X= - b +- Underroot D / 2a

= 16 +- 10root3 / 2

= 8 +- 5root3 = x

So x can be 8 + 5root3 and 8 - 5root 3

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