29n^2-76n=n^2-40

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Solution for 29n^2-76n=n^2-40 equation:


Simplifying
29n2 + -76n = n2 + -40

Reorder the terms:
-76n + 29n2 = n2 + -40

Reorder the terms:
-76n + 29n2 = -40 + n2

Solving
-76n + 29n2 = -40 + n2

Solving for variable 'n'.

Reorder the terms:
40 + -76n + 29n2 + -1n2 = -40 + n2 + 40 + -1n2

Combine like terms: 29n2 + -1n2 = 28n2
40 + -76n + 28n2 = -40 + n2 + 40 + -1n2

Reorder the terms:
40 + -76n + 28n2 = -40 + 40 + n2 + -1n2

Combine like terms: -40 + 40 = 0
40 + -76n + 28n2 = 0 + n2 + -1n2
40 + -76n + 28n2 = n2 + -1n2

Combine like terms: n2 + -1n2 = 0
40 + -76n + 28n2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(10 + -19n + 7n2) = 0

Factor a trinomial.
4((5 + -7n)(2 + -1n)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(5 + -7n)' equal to zero and attempt to solve: Simplifying 5 + -7n = 0 Solving 5 + -7n = 0 Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -7n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -7n = 0 + -5 -7n = 0 + -5 Combine like terms: 0 + -5 = -5 -7n = -5 Divide each side by '-7'. n = 0.7142857143 Simplifying n = 0.7142857143

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 = {0.7142857143, 2}

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