Question

Which equation can be solved by using this system of equations? ​

Answer 1

Answer:

The third option

Step-by-step explanation:

One thing that we can do with two equations in a system of equations is add them together. If we do that with these equations, we get

$3x^{5} + 4x^{4} - 5x^{3} + 6x^{3} + 2x^{2} - 10x + 4 - 11 = 2y\\3x^{5} + 4x^{4} + x^{3} + 2x^{2} -10x - 7 = 2y$

In the addition, I simply combined like terms (where the variable was the same, and the x was to the same degree, e.g. -5x^3 + 6x^3 are both to the third degree, and the result is x^3). If we make y 0, our answer is the third option.

Answer 2

9514 1404 393

Answer:

  B

Step-by-step explanation:

The equation that can be used to solve the system is the one that equates the two expressions for y. (Choice B)