r^2=-4r-3

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Solution for r^2=-4r-3 equation:


Simplifying
r2 = -4r + -3

Reorder the terms:
r2 = -3 + -4r

Solving
r2 = -3 + -4r

Solving for variable 'r'.

Reorder the terms:
3 + 4r + r2 = -3 + -4r + 3 + 4r

Reorder the terms:
3 + 4r + r2 = -3 + 3 + -4r + 4r

Combine like terms: -3 + 3 = 0
3 + 4r + r2 = 0 + -4r + 4r
3 + 4r + r2 = -4r + 4r

Combine like terms: -4r + 4r = 0
3 + 4r + r2 = 0

Factor a trinomial.
(3 + r)(1 + r) = 0

Subproblem 1

Set the factor '(3 + r)' equal to zero and attempt to solve: Simplifying 3 + r = 0 Solving 3 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + r = 0 + -3 r = 0 + -3 Combine like terms: 0 + -3 = -3 r = -3 Simplifying r = -3

Subproblem 2

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

Solution

r = {-3, -1}

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