3r^2-4=-11r

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Solution for 3r^2-4=-11r equation:


Simplifying
3r2 + -4 = -11r

Reorder the terms:
-4 + 3r2 = -11r

Solving
-4 + 3r2 = -11r

Solving for variable 'r'.

Reorder the terms:
-4 + 11r + 3r2 = -11r + 11r

Combine like terms: -11r + 11r = 0
-4 + 11r + 3r2 = 0

Factor a trinomial.
(-4 + -1r)(1 + -3r) = 0

Subproblem 1

Set the factor '(-4 + -1r)' equal to zero and attempt to solve: Simplifying -4 + -1r = 0 Solving -4 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1r = 0 + 4 -1r = 0 + 4 Combine like terms: 0 + 4 = 4 -1r = 4 Divide each side by '-1'. r = -4 Simplifying r = -4

Subproblem 2

Set the factor '(1 + -3r)' equal to zero and attempt to solve: Simplifying 1 + -3r = 0 Solving 1 + -3r = 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 + -3r = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3r = 0 + -1 -3r = 0 + -1 Combine like terms: 0 + -1 = -1 -3r = -1 Divide each side by '-3'. r = 0.3333333333 Simplifying r = 0.3333333333

Solution

r = {-4, 0.3333333333}

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