49n^2=56n+84

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Solution for 49n^2=56n+84 equation:


Simplifying
49n2 = 56n + 84

Reorder the terms:
49n2 = 84 + 56n

Solving
49n2 = 84 + 56n

Solving for variable 'n'.

Reorder the terms:
-84 + -56n + 49n2 = 84 + 56n + -84 + -56n

Reorder the terms:
-84 + -56n + 49n2 = 84 + -84 + 56n + -56n

Combine like terms: 84 + -84 = 0
-84 + -56n + 49n2 = 0 + 56n + -56n
-84 + -56n + 49n2 = 56n + -56n

Combine like terms: 56n + -56n = 0
-84 + -56n + 49n2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(-12 + -8n + 7n2) = 0

Factor a trinomial.
7((-6 + -7n)(2 + -1n)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-6 + -7n)' equal to zero and attempt to solve: Simplifying -6 + -7n = 0 Solving -6 + -7n = 0 Move all terms containing n to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -7n = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -7n = 0 + 6 -7n = 0 + 6 Combine like terms: 0 + 6 = 6 -7n = 6 Divide each side by '-7'. n = -0.8571428571 Simplifying n = -0.8571428571

Subproblem 2

Set the factor '(2 + -1n)' equal to zero and attempt to solve: Simplifying 2 + -1n = 0 Solving 2 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1n = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1n = 0 + -2 -1n = 0 + -2 Combine like terms: 0 + -2 = -2 -1n = -2 Divide each side by '-1'. n = 2 Simplifying n = 2

Solution

n = {-0.8571428571, 2}

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