Im guessing those are those brackets?
Answer:
A. (x + 2)²(x - 2)²
Step-by-step explanation:
x⁴ - 8x² + 16 =
(x² - 4)(x² - 4) =
(x - 2)(x + 2)(x - 2)(x + 2) =
(x - 2)²(x + 2)²
First, we must understand that to find the perimeter of an object you must add up the lengths of each side.
Some options are:
A square (4 sides) with sides of 4 units long.
4x4=16
A rectangle (4 sides) that is 6 units long and 2 units wide
6+2+6+2=16
An octagon (8 sides) with sides 2 units long
8x2=16
Answer:
no roots.
Step-by-step explanation:
1) 
2) 
note, the value after operation 'square root' cannot be negative ('-6' is on the right side!), then
3) it means, the given equation has no real roots.
Answer:
11. Yes this is reasonable. Because medicine is often taken in small amounts, 4 millilitres is reasonable
12. This is not reasonable. Three liters of water is a very large amount. If you drink three liters of water in one sitting you could get water poisoning.
Step-by-step explanation:
