Solve the system.
2x+y = 3
-2y = 14 - 6x

The solution is: (2, -1)

Step-by-step explanation:

First we rewrite the second system equation

  →  

Now we have the following system of equations:

To solve the system multiply the first equation by -3 and add it to the second equation

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Now we substitute the value of y in the first equation and solve for x

The solution is: (2, -1)

For this case we have the following system of equations:

We clear "y" from the second equation:

We substitute in the first equation:

So:

The solution is:

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.