Answer:
Step-by-step explanation:
x+y=10
x=10-y
x=10-5
x=5
3y= -3x+30
3(10-y)= -3(10-y)+30
30-3y= -30+3y+30
30+30-30=6y
30=6y
y=5
Ok if you would to take away 3 it would increase the mean median and mode
First, open the parenthesis. You get
6x^2 - 24x -16x^2 - 9x + 1
Then simplify to
-10x^2 - 33x +1
Answer: 
Step-by-step explanation:
The difference is obtained by subtracting the polynomial
and the polynomial
.
It is important to remember the multiplication of signs:

Then, you can subtract both polynomials to find the difference.
You need to Distribute the negative sign:

Finally, you have to add the like terms. Then:
