Which equation has the solutions x=1+- square root of 5
a. x2 + 2x + 4 = 0
b. x2 – 2x + 4 = 0
c. x2 + 2x – 4 = 0
d. x2 – 2x – 4 = 0

Step-by-step explanation:

Equation: --1

Quadratic formula :

Now Solve the given option using this formula

A)

On comparing with 1

a = 1 , b = 2 , c= 4

So,

B)

On comparing with 1

a = 1 , b = -2 , c= 4

So,

C)

On comparing with 1

a = 1 , b = 2 , c=- 4

So,

D)

On comparing with 1

a = 1 , b = -2 , c= -4

So,

Hence Option D is correct.

has a solution

t hope this

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