Answer:
![3x^2-9xy+13y^2](https://tex.z-dn.net/?f=3x%5E2-9xy%2B13y%5E2)
Step-by-step explanation:
We begin with : ![6x^2-7xy+8y^2-[(x^2-3xy-y^2)+(2x^2+5xy-4y^2)]](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-%5B%28x%5E2-3xy-y%5E2%29%2B%282x%5E2%2B5xy-4y%5E2%29%5D)
First, let us add the two portions within the brackets. To do this, we need to just combine the like terms
![6x^2-7xy+8y^2-[(x^2-3xy-y^2)+(2x^2+5xy-4y^2)]\\\\6x^2-7xy+8y^2-[3x^2+2xy-5y^2]](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-%5B%28x%5E2-3xy-y%5E2%29%2B%282x%5E2%2B5xy-4y%5E2%29%5D%5C%5C%5C%5C6x%5E2-7xy%2B8y%5E2-%5B3x%5E2%2B2xy-5y%5E2%5D)
Next, we need to distribute the negative to all the terms within the brackets
![6x^2-7xy+8y^2-[3x^2+2xy-5y^2]\\\\6x^2-7xy+8y^2-3x^2-2xy+5y^2](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-%5B3x%5E2%2B2xy-5y%5E2%5D%5C%5C%5C%5C6x%5E2-7xy%2B8y%5E2-3x%5E2-2xy%2B5y%5E2)
Now we can combine the like terms again
![6x^2-7xy+8y^2-3x^2-2xy+5y^2\\\\3x^2-9xy+13y^2](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-3x%5E2-2xy%2B5y%5E2%5C%5C%5C%5C3x%5E2-9xy%2B13y%5E2)
12 bagels = 1 box
3 = number of boxes
12 bagels per box × 3 boxes = 36 total bagels
Answer:
No.
standard deviation kind of works like absolute value. think of it that way. absolute value is just distance from zero and standard deviation is just distance from the mean.
Answer:
X = 1
Y = -3
Step-by-step explanation:
The Cartesian coordinate system, also called the rectangular coordinate system, is based on a two-dimensional plane consisting of the x-axis and the y-axis.
25% is the profit percentage