What number should be added to both sides of the equation to complete the square?

x2 – 6x = 5

9 should be added  to both sides of the equation to complete the square.

Step-by-step explanation:

Given :

To Find: What number should be added to both sides of the equation to complete the square?

Solution:

Add the square of  half of coefficient of x

So, the square of  half of coefficient of x =

So,

Thus 9 should be added  to both sides of the equation to complete the square.

28

step-by-step explanation:

because that's the answer

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -