Answer: 
Step-by-step explanation:
Given the quadratic equation 
, you need to factor it.
In order to find the form asked of the given equation, you need to factor out the common factor of the terms.
You can observe that the common factor of the terms of the equation is: 
Now, knowing this, you must factor out . Then you get the following form:
Therefore, the factored fom of the equation is:
Answer:
Step-by-step explanation:
Since it is a square, all four sides are equal and its perimeter is just
P=4s, so if P=8 then
4s=8, dividing each side by 4 we get
s=2
So each side of the plastic square is 2 centimeters.
It costs 5,5! Bc 1 costs 0,5
Answer: sqrt(19)/10
Step-by-step explanation:
sinx=0.9
x=arcsin(0.9)
Insert x for cos(x):
cos(arcsin(0.9)=
Use identify 
, so
Sorry if this is confusing.
Answer:
30
Step-by-step explanation:
