Question

x^2-9x+36=0
solve this​

Answer 1

Let,a=1,b=-9,c=36

By formula method,

x=[-b+√(b^2-4ac)]/2a,[-b-√(b^2-4ac)]/2a

x=[9+√(81-144)]/2,[9-√(81-144)]/2

x=[9+3√(-7)]/2,[9-3√(-7)]/2