Question

What are the solutions of the quadratic equation below?
x^2-4x-6=0

Answer 1

What the person above said

Answer 2

x

=

−

2

+

√

10

and

x

=

−

2

−

√

10

Step-by-step explanation:

x

2

+

4

x

=

6

or

x

2

+

4

x

+

4

=

6

+

4

or

(

x

+

2

)

2

=

10

or

x

+

2

=

±

√

10

or

x

=

−

2

±

√

10

∴

x

=

−

2

+

√

10

and

x

=

−

2

−

√

10

Solution:

x

=

−

2

+

√

10

and

x

=

−

2

−

√

10

[Ans]

Step-by-step explanation: