For this case we have the following system of equations:

Equating both equations we have:

We must find the solutions, for this we factor. We look for two numbers that, when multiplied, result in 4 and when added, result in 5. These numbers are 4 and 1:

Then, the factorized equation is of the form:

Thus, the solutions are:

We look for solutions for the variable "y":

Thus, the system solutions are given by:
ANswer:

-2n(5 + n - 8 - 3n)
-10n - 2n² + 16n + 6n²
4n² + 6n
5a+b = 5(6)+3 =3
10-r+5 = 10-(9)+5 =6
19 percent.
15/80 = <span>18.75, rounded is 19.</span>
X^2 - 5x - 8 - <span>2x^2 + 4x + 3
= -x^2 - x - 5
hope that helps</span>