r^2+8r=4r

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Solution for r^2+8r=4r equation:


Simplifying
r2 + 8r = 4r

Reorder the terms:
8r + r2 = 4r

Solving
8r + r2 = 4r

Solving for variable 'r'.

Reorder the terms:
8r + -4r + r2 = 4r + -4r

Combine like terms: 8r + -4r = 4r
4r + r2 = 4r + -4r

Combine like terms: 4r + -4r = 0
4r + r2 = 0

Factor out the Greatest Common Factor (GCF), 'r'.
r(4 + r) = 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 '(4 + r)' equal to zero and attempt to solve: Simplifying 4 + r = 0 Solving 4 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + r = 0 + -4 Combine like terms: 4 + -4 = 0 0 + r = 0 + -4 r = 0 + -4 Combine like terms: 0 + -4 = -4 r = -4 Simplifying r = -4

Solution

r = {0, -4}

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