Question

x²-3x-1 solve by prime factorisation
Don't use quadratic formula...​

Answer 1

Factorization:

This quadratic equation cannot be solved by normal method need to use following formula

X = (-b ± √b^2 -4ac)/2a

X^2 - 3X + 1 = 0

In this case,

a= 1

b = -3

c =1

X = (3±√9–4)/2

=(3±√5)/2

= (3±2.24)/2

X = (3+2.24)/2 , (3–2.24)/2

X = 5.24/2 , 0.76/2

Roots X = 2.62, 0.38