(7n+2)(2n-7)=0

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Solution for (7n+2)(2n-7)=0 equation:


Simplifying
(7n + 2)(2n + -7) = 0

Reorder the terms:
(2 + 7n)(2n + -7) = 0

Reorder the terms:
(2 + 7n)(-7 + 2n) = 0

Multiply (2 + 7n) * (-7 + 2n)
(2(-7 + 2n) + 7n * (-7 + 2n)) = 0
((-7 * 2 + 2n * 2) + 7n * (-7 + 2n)) = 0
((-14 + 4n) + 7n * (-7 + 2n)) = 0
(-14 + 4n + (-7 * 7n + 2n * 7n)) = 0
(-14 + 4n + (-49n + 14n2)) = 0

Combine like terms: 4n + -49n = -45n
(-14 + -45n + 14n2) = 0

Solving
-14 + -45n + 14n2 = 0

Solving for variable 'n'.

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

Subproblem 1

Set the factor '(-2 + -7n)' equal to zero and attempt to solve: Simplifying -2 + -7n = 0 Solving -2 + -7n = 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 + -7n = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -7n = 0 + 2 -7n = 0 + 2 Combine like terms: 0 + 2 = 2 -7n = 2 Divide each side by '-7'. n = -0.2857142857 Simplifying n = -0.2857142857

Subproblem 2

Set the factor '(7 + -2n)' equal to zero and attempt to solve: Simplifying 7 + -2n = 0 Solving 7 + -2n = 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 + -2n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2n = 0 + -7 -2n = 0 + -7 Combine like terms: 0 + -7 = -7 -2n = -7 Divide each side by '-2'. n = 3.5 Simplifying n = 3.5

Solution

n = {-0.2857142857, 3.5}

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