Question

Solve the following quadratic equation: 2x2 + 4x - 8 = 0
OR​

Answer 1

Answer:

x=1

Step-by-step explanation:

4+4x-8=0

4x-8=-4

4x=-4+8

4x=4

x=4/4=1

Answer 2

Answer:

2x^2+4x-8 = 0

x^2+2x-4 = 0. (divided by 2)

By using quadratic formula,

x= -2±√2^2-4(1)(-4)/2(1)

= -2±√4+16/2

= -2±√20/2

= -2±2√5/2

= (2)(-1±√5)/2

= -1±√5

Therefore, x = -1+√5 or -1-√5.

I hope it helps....