-2r(8r+5)=

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Solution for -2r(8r+5)= equation:


Simplifying
-2r(8r + 5) = 0

Reorder the terms:
-2r(5 + 8r) = 0
(5 * -2r + 8r * -2r) = 0
(-10r + -16r2) = 0

Solving
-10r + -16r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '-2r'.
-2r(5 + 8r) = 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 '(5 + 8r)' equal to zero and attempt to solve: Simplifying 5 + 8r = 0 Solving 5 + 8r = 0 Move all terms containing r to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 8r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 8r = 0 + -5 8r = 0 + -5 Combine like terms: 0 + -5 = -5 8r = -5 Divide each side by '8'. r = -0.625 Simplifying r = -0.625

Solution

r = {0, -0.625}

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