7r^2-14r-50=6

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Solution for 7r^2-14r-50=6 equation:


Simplifying
7r2 + -14r + -50 = 6

Reorder the terms:
-50 + -14r + 7r2 = 6

Solving
-50 + -14r + 7r2 = 6

Solving for variable 'r'.

Reorder the terms:
-50 + -6 + -14r + 7r2 = 6 + -6

Combine like terms: -50 + -6 = -56
-56 + -14r + 7r2 = 6 + -6

Combine like terms: 6 + -6 = 0
-56 + -14r + 7r2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(-8 + -2r + r2) = 0

Factor a trinomial.
7((-2 + -1r)(4 + -1r)) = 0

Ignore the factor 7.

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 '(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 = {-2, 4}

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