Which matrix represents the system of equation below? { 8x-9y+13z=11 -8x-5y+5z=15 3x+4y-8z=-10

In this question , we have the following equations

And we have to put these in matrix form.

We make a matrix for the numbers of the left side, a matrix for the variables x , y ,z , and a matrix for the numbers on the right side , that is

And that's the required matrix.

the answer is a

step-by-step explanation:

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.