3r^2-10r=8

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Solution for 3r^2-10r=8 equation:


Simplifying
3r2 + -10r = 8

Reorder the terms:
-10r + 3r2 = 8

Solving
-10r + 3r2 = 8

Solving for variable 'r'.

Reorder the terms:
-8 + -10r + 3r2 = 8 + -8

Combine like terms: 8 + -8 = 0
-8 + -10r + 3r2 = 0

Factor a trinomial.
(-2 + -3r)(4 + -1r) = 0

Subproblem 1

Set the factor '(-2 + -3r)' equal to zero and attempt to solve: Simplifying -2 + -3r = 0 Solving -2 + -3r = 0 Move all terms containing r to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -3r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3r = 0 + 2 -3r = 0 + 2 Combine like terms: 0 + 2 = 2 -3r = 2 Divide each side by '-3'. r = -0.6666666667 Simplifying r = -0.6666666667

Subproblem 2

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

Solution

r = {-0.6666666667, 4}

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