r^2-10r-14=10

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Solution for r^2-10r-14=10 equation:


Simplifying
r2 + -10r + -14 = 10

Reorder the terms:
-14 + -10r + r2 = 10

Solving
-14 + -10r + r2 = 10

Solving for variable 'r'.

Reorder the terms:
-14 + -10 + -10r + r2 = 10 + -10

Combine like terms: -14 + -10 = -24
-24 + -10r + r2 = 10 + -10

Combine like terms: 10 + -10 = 0
-24 + -10r + r2 = 0

Factor a trinomial.
(-2 + -1r)(12 + -1r) = 0

Subproblem 1

Set the factor '(-2 + -1r)' equal to zero and attempt to solve: Simplifying -2 + -1r = 0 Solving -2 + -1r = 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 + -1r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1r = 0 + 2 -1r = 0 + 2 Combine like terms: 0 + 2 = 2 -1r = 2 Divide each side by '-1'. r = -2 Simplifying r = -2

Subproblem 2

Set the factor '(12 + -1r)' equal to zero and attempt to solve: Simplifying 12 + -1r = 0 Solving 12 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1r = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1r = 0 + -12 -1r = 0 + -12 Combine like terms: 0 + -12 = -12 -1r = -12 Divide each side by '-1'. r = 12 Simplifying r = 12

Solution

r = {-2, 12}

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