-7r^2-140r-700=0

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Solution for -7r^2-140r-700=0 equation:


Simplifying
-7r2 + -140r + -700 = 0

Reorder the terms:
-700 + -140r + -7r2 = 0

Solving
-700 + -140r + -7r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '-7'.
-7(100 + 20r + r2) = 0

Factor a trinomial.
-7((10 + r)(10 + r)) = 0

Ignore the factor -7.

Subproblem 1

Set the factor '(10 + r)' equal to zero and attempt to solve: Simplifying 10 + r = 0 Solving 10 + r = 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 + r = 0 + -10 Combine like terms: 10 + -10 = 0 0 + r = 0 + -10 r = 0 + -10 Combine like terms: 0 + -10 = -10 r = -10 Simplifying r = -10

Subproblem 2

Set the factor '(10 + r)' equal to zero and attempt to solve: Simplifying 10 + r = 0 Solving 10 + r = 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 + r = 0 + -10 Combine like terms: 10 + -10 = 0 0 + r = 0 + -10 r = 0 + -10 Combine like terms: 0 + -10 = -10 r = -10 Simplifying r = -10

Solution

r = {-10, -10}

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