2r^2+12r=2720

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Solution for 2r^2+12r=2720 equation:


Simplifying
2r2 + 12r = 2720

Reorder the terms:
12r + 2r2 = 2720

Solving
12r + 2r2 = 2720

Solving for variable 'r'.

Reorder the terms:
-2720 + 12r + 2r2 = 2720 + -2720

Combine like terms: 2720 + -2720 = 0
-2720 + 12r + 2r2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-1360 + 6r + r2) = 0

Factor a trinomial.
2((-40 + -1r)(34 + -1r)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-40 + -1r)' equal to zero and attempt to solve: Simplifying -40 + -1r = 0 Solving -40 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + -1r = 0 + 40 Combine like terms: -40 + 40 = 0 0 + -1r = 0 + 40 -1r = 0 + 40 Combine like terms: 0 + 40 = 40 -1r = 40 Divide each side by '-1'. r = -40 Simplifying r = -40

Subproblem 2

Set the factor '(34 + -1r)' equal to zero and attempt to solve: Simplifying 34 + -1r = 0 Solving 34 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-34' to each side of the equation. 34 + -34 + -1r = 0 + -34 Combine like terms: 34 + -34 = 0 0 + -1r = 0 + -34 -1r = 0 + -34 Combine like terms: 0 + -34 = -34 -1r = -34 Divide each side by '-1'. r = 34 Simplifying r = 34

Solution

r = {-40, 34}

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