Question

What value must be filled in the blank in order to complete the square?

Answer 1

Answer:

=

(

x

−

5

)

2

Explanation:

25

=

5

2

Given that,

x

2

−

10

x

+

25

=

x

2

−

10

x

+

5

2

Identity:

a

2

−

2

(

a

b

)

+

b

2

=

(

a

−

b

)

2

Here,

a

=

x

and

b

=

5

∴

=

(

x

−

5

)

2