Question

Factorise the quadratic equation x² -2x -2 = 0

Answer 1

Answer:

x= 2.732         &       x=-0.732

Step-by-step explanation:

a=1, b= -2, c= -2

• x= -b±(√b²- 4ac)/2a

• x= (2±√4+8)/2
• x= (2±√12)/2
• x= (2±2√3)/2

take 2 common

• x= 2(1±√3)/2

2 gets cancelled

• x= 1±√3
• x= 1+1.732        &              x= 1-1.732
• x= 2.732          &               x= -0.732