r^2+18r+73=-8

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Solution for r^2+18r+73=-8 equation:


Simplifying
r2 + 18r + 73 = -8

Reorder the terms:
73 + 18r + r2 = -8

Solving
73 + 18r + r2 = -8

Solving for variable 'r'.

Reorder the terms:
73 + 8 + 18r + r2 = -8 + 8

Combine like terms: 73 + 8 = 81
81 + 18r + r2 = -8 + 8

Combine like terms: -8 + 8 = 0
81 + 18r + r2 = 0

Factor a trinomial.
(9 + r)(9 + r) = 0

Subproblem 1

Set the factor '(9 + r)' equal to zero and attempt to solve: Simplifying 9 + r = 0 Solving 9 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + r = 0 + -9 Combine like terms: 9 + -9 = 0 0 + r = 0 + -9 r = 0 + -9 Combine like terms: 0 + -9 = -9 r = -9 Simplifying r = -9

Subproblem 2

Set the factor '(9 + r)' equal to zero and attempt to solve: Simplifying 9 + r = 0 Solving 9 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + r = 0 + -9 Combine like terms: 9 + -9 = 0 0 + r = 0 + -9 r = 0 + -9 Combine like terms: 0 + -9 = -9 r = -9 Simplifying r = -9

Solution

r = {-9, -9}

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