Answer:
A. add 81; 
Step-by-step explanation:
The perfect square formula

Rewrite expression
as follows:

So, to form a perfect square,
is missed.
When we add
we will get

Answer:
2^4=16
Hope i helped
Answer:
( x^2 - 6 )^2
Step-by-step explanation:
- Find one factor
- Factor by grouping
*solution* ( x^2 - 6 )^2
Answer:
X=5
Step-by-step explanation:
-3x+8=-7
-3x=-15
X=5
I am pretty sure the answer is 180