7/8m^3 +3-1/2m^3. can u please help me solve this

3m^3/8 + 3

Step-by-step explanation:

It can't be solved but that's the most simplified version.

15/8m^3

Step-by-step explanation:

7/8m^3+2/2m^3

7/8m^3+1/m^3

=15/8m^3

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.