-5r^9+20r^7b^4=

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Solution for -5r^9+20r^7b^4= equation: 


Simplifying
-5r9 + 20r7b4 = 0

Reorder the terms:
20b4r7 + -5r9 = 0

Solving
20b4r7 + -5r9 = 0

Solving for variable 'b'.

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

Add '5r9' to each side of the equation.
20b4r7 + -5r9 + 5r9 = 0 + 5r9

Combine like terms: -5r9 + 5r9 = 0
20b4r7 + 0 = 0 + 5r9
20b4r7 = 0 + 5r9
Remove the zero:
20b4r7 = 5r9

Divide each side by '20r7'.
b4 = 0.25r2

Simplifying
b4 = 0.25r2

Combine like terms: 0.25r2 + -0.25r2 = 0.00
b4 + -0.25r2 = 0.00

Factor a difference between two squares.
(b2 + 0.5r)(b2 + -0.5r) = 0.00


Subproblem 1
Set the factor '(b2 + 0.5r)' equal to zero and attempt to solve:

Simplifying
b2 + 0.5r = 0

Solving
b2 + 0.5r = 0

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

Add '-0.5r' to each side of the equation.
b2 + 0.5r + -0.5r = 0 + -0.5r

Combine like terms: 0.5r + -0.5r = 0.0
b2 + 0.0 = 0 + -0.5r
b2 = 0 + -0.5r
Remove the zero:
b2 = -0.5r

Simplifying
b2 = -0.5r

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

Subproblem 2
Set the factor '(b2 + -0.5r)' equal to zero and attempt to solve:

Simplifying
b2 + -0.5r = 0

Solving
b2 + -0.5r = 0

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

Add '0.5r' to each side of the equation.
b2 + -0.5r + 0.5r = 0 + 0.5r

Combine like terms: -0.5r + 0.5r = 0.0
b2 + 0.0 = 0 + 0.5r
b2 = 0 + 0.5r
Remove the zero:
b2 = 0.5r

Simplifying
b2 = 0.5r

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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