10r^3+8r^2+6r=

Solution for 10r^3+8r^2+6r= equation:

Simplifying
10r3 + 8r2 + 6r = 0

Reorder the terms:
6r + 8r2 + 10r3 = 0

Solving
6r + 8r2 + 10r3 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '2r'.
2r(3 + 4r + 5r2) = 0

Ignore the factor 2.
Subproblem 1
Set the factor 'r' equal to zero and attempt to solve:

Simplifying
r = 0

Solving
r = 0

Move all terms containing r to the left, all other terms to the right.

Simplifying
r = 0
Subproblem 2
Set the factor '(3 + 4r + 5r2)' equal to zero and attempt to solve:

Simplifying
3 + 4r + 5r2 = 0

Solving
3 + 4r + 5r2 = 0

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
0.6 + 0.8r + r2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + 0.8r + -0.6 + r2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + 0.8r + r2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + 0.8r + r2 = 0 + -0.6
0.8r + r2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
0.8r + r2 = -0.6

The r term is 0.8r.  Take half its coefficient (0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
0.8r + 0.16 + r2 = -0.6 + 0.16

Reorder the terms:
0.16 + 0.8r + r2 = -0.6 + 0.16

Combine like terms: -0.6 + 0.16 = -0.44
0.16 + 0.8r + r2 = -0.44

Factor a perfect square on the left side:
(r + 0.4)(r + 0.4) = -0.44

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
r = {0}