(5r^2+20r-700)=0

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Solution for (5r^2+20r-700)=0 equation:


Simplifying
(5r2 + 20r + -700) = 0

Reorder the terms:
(-700 + 20r + 5r2) = 0

Remove parenthesis around (-700 + 20r + 5r2)
-700 + 20r + 5r2 = 0

Solving
-700 + 20r + 5r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '5'.
5(-140 + 4r + r2) = 0

Factor a trinomial.
5((-14 + -1r)(10 + -1r)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-14 + -1r)' equal to zero and attempt to solve: Simplifying -14 + -1r = 0 Solving -14 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -1r = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -1r = 0 + 14 -1r = 0 + 14 Combine like terms: 0 + 14 = 14 -1r = 14 Divide each side by '-1'. r = -14 Simplifying r = -14

Subproblem 2

Set the factor '(10 + -1r)' equal to zero and attempt to solve: Simplifying 10 + -1r = 0 Solving 10 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1r = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1r = 0 + -10 -1r = 0 + -10 Combine like terms: 0 + -10 = -10 -1r = -10 Divide each side by '-1'. r = 10 Simplifying r = 10

Solution

r = {-14, 10}

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