Help me please (No beginners)

C

Step-by-step explanation:

The distance between numbers is the difference between them.

5/2 and  4 7/8  

Using these pints the distance will be

5/2 -   is the same as -5/2 - 4 7/8  

and is also not the same as 5/2 - (-4 7/8)

C) None of the above

Step-by-step explanation:

The distance between 5/2 and 4 7/8 is 4 7/8-5/2= 39/8-20/8=19/8=2 3/8

A) |-5/2-4 7/8|=|-20/8-39/8|=|-59/8|=59/8= 7 3/8 SO NO

B) |5/2-(-4 7/8)|=|20/8+39/8|=|59/8|=59/8= 7 3/8 SO NO

C) None of the above = YES

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.