Question

factorise x^2 - 2x + 7

Answer 1

x²-2x+7=0

x=-(-2)+√[(-2)²-4(1)(7)]/2
x= 2+√[4-28]/2
x=2+√(-24)/2

therefore, x =
$\frac{2 + \sqrt{ - 24} }{2}$
or
$\frac{2 - \sqrt{ - 24} }{2}$