What are the solutions of x^2-8-5x?

1 Answer
Jan 21, 2018

x^2 - 5x -8
for any quadratic equation ax^2 + bx +c the roots are given by
x = (-b +- root()(b^2 - 4ac))/(2a)
so using the above formula
x = (5 +- root()(25 - 4*1*(-8)))/(2)
which is
x = (5+- root()(25 + 32))/2
the roots are
x = (5 + root()(57))/2 and (5 - root()(57))/2
hope you find it helpful :)