The answer is 3n^2+1
9n^2 - 6n^2 = 3n^2
3n-3n=0
4-3=1
You have to put the number under 1 so you would get 1 over -27
Answer:
61 degrees
Step-by-step explanation:
A right angle equals 90 degrees.
90-29= 61
Answer:
Last option: 4
Step-by-step explanation:
The quadratic equation simplified:
has the form:
![ax^2+bx=c](https://tex.z-dn.net/?f=ax%5E2%2Bbx%3Dc)
In this case, you can identify that "a", "b" and "c" are:
![a=1\\b=-4\\c=-\frac{7}{2}](https://tex.z-dn.net/?f=a%3D1%5C%5Cb%3D-4%5C%5Cc%3D-%5Cfrac%7B7%7D%7B2%7D)
To solve this quadratic equation by completing the square, Carlos should add
to both sides of the equation. This is:
![(\frac{-4}{2})^2=(-2)^2=4](https://tex.z-dn.net/?f=%28%5Cfrac%7B-4%7D%7B2%7D%29%5E2%3D%28-2%29%5E2%3D4)
Then:
Therefore you can observe that the number he should add to both sides of the equation is: 4