5r^2+5r-31r+5=0

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Solution for 5r^2+5r-31r+5=0 equation:


Simplifying
5r2 + 5r + -31r + 5 = 0

Reorder the terms:
5 + 5r + -31r + 5r2 = 0

Combine like terms: 5r + -31r = -26r
5 + -26r + 5r2 = 0

Solving
5 + -26r + 5r2 = 0

Solving for variable 'r'.

Factor a trinomial.
(1 + -5r)(5 + -1r) = 0

Subproblem 1

Set the factor '(1 + -5r)' equal to zero and attempt to solve: Simplifying 1 + -5r = 0 Solving 1 + -5r = 0 Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -5r = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -5r = 0 + -1 -5r = 0 + -1 Combine like terms: 0 + -1 = -1 -5r = -1 Divide each side by '-5'. r = 0.2 Simplifying r = 0.2

Subproblem 2

Set the factor '(5 + -1r)' equal to zero and attempt to solve: Simplifying 5 + -1r = 0 Solving 5 + -1r = 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 + -1r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1r = 0 + -5 -1r = 0 + -5 Combine like terms: 0 + -5 = -5 -1r = -5 Divide each side by '-1'. r = 5 Simplifying r = 5

Solution

r = {0.2, 5}

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