Which statements are true about the ordered pair (−1, 5) and the system of equations?

Option D is correct answer.

Step-by-step explanation:

We are given the system of equations:

Solving the system of equations to find values of x and y

Let:

Adding both equations to find value of x

So, we get value of x: x=-1

Now, putting value of x: x=-1 into equation 1 to find value of y

So, we get value of y: y=5

The ordered pair will be: (-1,5)

So, Option D: The ordered pair(-1,5) is a a solution to the system of equations because it makes both equations true is correct choice.

Checking:

Put x=-1 and y=5 in equation 1

Put x=-1 and y=5 in equation 2

So, both equations are true.

Therefore, Option D is correct answer.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.