Answer:
Step-by-step explanation:
In this problem we have the equation of the following quadratic equation and we want to solve it using the method of square completion:
The steps are shown below:
For any equation of the form: 
1. If the coefficient a is different from 1, then take a as a common factor.
In this case 
. Then:
2. Take the coefficient b that accompanies the variable x. In this case the coefficient is 4. Then, divide by 2 and the result squared it.
We have:
3. Add the term obtained in the previous step on both sides of equality, remember to multiply by the common factor :
4. Factor the resulting expression, and you will get:
Now solve the equation:
Note that the term 
is always 
therefore it can not be equal to -28.
The equation has no solution in real numbers.
In the same way we can find the complex roots:
Answer:
144 days
Step-by-step explanation:
160 · 0.9
Answer:
i think its A im not sure
Step-by-step explanation:
Answer:
x = 0
Step-by-step explanation:
the origin
Using a system of equations, it is found that she made:
- 168 two-point field goals.
- 53 three-point field goals.
For the system, we have that:
- x is the number of free throws made.
- y is the number of two-point field goals made.
- z is the number of three-point field goals made.
She made 362 shots, hence:
She scored 636 points, hence:
- Observation: I used 636 as there would not be a solution(number of field goals cannot be a fraction) if 634 was used.
She made 27 more 2-point field goals than free throws, hence:
Then:
Equaling both equations for z, finding x:
Then, to find y and z:
She made:
- 168 two-point field goals.
- 53 three-point field goals.
You can learn more about system of equations at brainly.com/question/25960609
