Complete the square for each expression. then factor the trinomial
x^2+8x

The value of x is or

Step-by-step explanation:

The expression is

To complete the square, the equation is of the form

The constant term c can be determined using,

Rewriting the expression and factoring the trinomial, we have,

Taking square root on both sides, we get,

Either,

 or

Thus, the value of x is   or

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 -