Question

find the roots of the quadratic equation X square - 3 x minus one​

Answer 1

Answer:

$x = \frac{3 + \sqrt{13} }{2}$

$x = \frac{3 - \sqrt{13} }{2}$

Step-by-step explanation:

x²-3x-1=0

a=1, b=-3, c=-1

x=-b±root of (b²-4ac) whole divided by 2a

x=-(-3)±root of ((-3)²-4(1)(-1)) whole divided by 2(1)

=3±root of (9+4) whole divided by 2

=(3±√13)/2