4n^2-10n=126

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Solution for 4n^2-10n=126 equation:


Simplifying
4n2 + -10n = 126

Reorder the terms:
-10n + 4n2 = 126

Solving
-10n + 4n2 = 126

Solving for variable 'n'.

Reorder the terms:
-126 + -10n + 4n2 = 126 + -126

Combine like terms: 126 + -126 = 0
-126 + -10n + 4n2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-63 + -5n + 2n2) = 0

Factor a trinomial.
2((-9 + -2n)(7 + -1n)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-9 + -2n)' equal to zero and attempt to solve: Simplifying -9 + -2n = 0 Solving -9 + -2n = 0 Move all terms containing n to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -2n = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2n = 0 + 9 -2n = 0 + 9 Combine like terms: 0 + 9 = 9 -2n = 9 Divide each side by '-2'. n = -4.5 Simplifying n = -4.5

Subproblem 2

Set the factor '(7 + -1n)' equal to zero and attempt to solve: Simplifying 7 + -1n = 0 Solving 7 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1n = 0 + -7 -1n = 0 + -7 Combine like terms: 0 + -7 = -7 -1n = -7 Divide each side by '-1'. n = 7 Simplifying n = 7

Solution

n = {-4.5, 7}

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