Question

Find the roots of quadratic equation x^2+4x+4​

Answer 1

We can also use the discriminate to show this same result:

The quadratic formula states:

For

a

x

2

+

b

x

+

c

=

0

, the values of

x

which are the solutions to the equation are given by:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

The discriminate is the portion of the quadratic equation within the radical:

b

2

−

4

a

c

If the discriminate is:

- Positive, you will get two real solutions

- Zero you get just ONE solution

- Negative you get complex solutions

To find the discriminant for this problem substitute:

1

for

a

−

4

for

b

4

for

c

(

−

4

)

2

−

(

4

⋅

1

⋅

4

)

⇒

16

−

16

⇒

0

Because the discriminate is

0

you get just ONE solution.

Answer 2

Step-by-step explanation:

this is your correct answer