55r^2+7400r-170000=0

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Solution for 55r^2+7400r-170000=0 equation:


Simplifying
55r2 + 7400r + -170000 = 0

Reorder the terms:
-170000 + 7400r + 55r2 = 0

Solving
-170000 + 7400r + 55r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '5'.
5(-34000 + 1480r + 11r2) = 0

Factor a trinomial.
5((-1700 + -11r)(20 + -1r)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-1700 + -11r)' equal to zero and attempt to solve: Simplifying -1700 + -11r = 0 Solving -1700 + -11r = 0 Move all terms containing r to the left, all other terms to the right. Add '1700' to each side of the equation. -1700 + 1700 + -11r = 0 + 1700 Combine like terms: -1700 + 1700 = 0 0 + -11r = 0 + 1700 -11r = 0 + 1700 Combine like terms: 0 + 1700 = 1700 -11r = 1700 Divide each side by '-11'. r = -154.5454545 Simplifying r = -154.5454545

Subproblem 2

Set the factor '(20 + -1r)' equal to zero and attempt to solve: Simplifying 20 + -1r = 0 Solving 20 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1r = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1r = 0 + -20 -1r = 0 + -20 Combine like terms: 0 + -20 = -20 -1r = -20 Divide each side by '-1'. r = 20 Simplifying r = 20

Solution

r = {-154.5454545, 20}

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