Answer:

Step-by-step explanation:

Answer:
25
Step-by-step explanation:
The number that needs to be added is the square of half the x-coefficient:
(-10/2)^2 = 25
_____
Adding that gives ...
(x -5)^2 = 32
x = 5 ± 4√2
Answer:
Step-by-step explanation:
the answer should be 49mm
28*7 / 4 = 49