Question

X^2+4x-1=0 solve formula method☺️

Answer 1

We can complete the square and use this with A=(x−2) and B=√3 as follows:

0=x2−4x+1

0=x2−4x+4−3

0=(x−2)2−(√3)2

0=((x−2)−√3)((x−2)+√3)

0=(x−2−√3)(x−2+√3)