Answer:
The number that would be added to make 
a complete square is 
Step-by-step explanation:
We need to solve the expression using completing the square method.
Completing square method is of form: 
We need to find the term, that it a complete square
The middle term is -19x so, it can be made as: -2(x)(19/2) according to the formula a^2-2ab+b^2
We have a=x and b=19/2
So, adding and subtracting (19/2)^2
So, the number that would be added to make a complete square is
Answer: 
Step-by-step explanation:
1. To solve this problem the first thing you can do is divide both sides of the quadractic equation by -4, then:
2. Now, to factor the quadratic equation you must find two numbers whose sum is -3/4 and the product is 1/4. These numbers are -1/4 and 1. Therefore, you have:
3. And the roots are:
Answer: 201.06 in²
Step-by-step explanation:
Use the equation πr² to find out the area of a circle.
Since the diameter is 16 the radius is half of that, 8.
π(8)²
Work out that equation and you're done!
16/18
-------------------------------
