(8r^4+6r^3-r^2)+(8r^3+7r-9r^2)=

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Solution for (8r^4+6r^3-r^2)+(8r^3+7r-9r^2)= equation: 


Simplifying
(8r4 + 6r3 + -1r2) + (8r3 + 7r + -9r2) = 0

Reorder the terms:
(-1r2 + 6r3 + 8r4) + (8r3 + 7r + -9r2) = 0

Remove parenthesis around (-1r2 + 6r3 + 8r4)
-1r2 + 6r3 + 8r4 + (8r3 + 7r + -9r2) = 0

Reorder the terms:
-1r2 + 6r3 + 8r4 + (7r + -9r2 + 8r3) = 0

Remove parenthesis around (7r + -9r2 + 8r3)
-1r2 + 6r3 + 8r4 + 7r + -9r2 + 8r3 = 0

Reorder the terms:
7r + -1r2 + -9r2 + 6r3 + 8r3 + 8r4 = 0

Combine like terms: -1r2 + -9r2 = -10r2
7r + -10r2 + 6r3 + 8r3 + 8r4 = 0

Combine like terms: 6r3 + 8r3 = 14r3
7r + -10r2 + 14r3 + 8r4 = 0

Solving
7r + -10r2 + 14r3 + 8r4 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), 'r'.
r(7 + -10r + 14r2 + 8r3) = 0


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 '(7 + -10r + 14r2 + 8r3)' equal to zero and attempt to solve:

Simplifying
7 + -10r + 14r2 + 8r3 = 0

Solving
7 + -10r + 14r2 + 8r3 = 0

The solution to this equation could not be determined.

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

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