(7n-1)(n+2)=0

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Solution for (7n-1)(n+2)=0 equation:


Simplifying
(7n + -1)(n + 2) = 0

Reorder the terms:
(-1 + 7n)(n + 2) = 0

Reorder the terms:
(-1 + 7n)(2 + n) = 0

Multiply (-1 + 7n) * (2 + n)
(-1(2 + n) + 7n * (2 + n)) = 0
((2 * -1 + n * -1) + 7n * (2 + n)) = 0
((-2 + -1n) + 7n * (2 + n)) = 0
(-2 + -1n + (2 * 7n + n * 7n)) = 0
(-2 + -1n + (14n + 7n2)) = 0

Combine like terms: -1n + 14n = 13n
(-2 + 13n + 7n2) = 0

Solving
-2 + 13n + 7n2 = 0

Solving for variable 'n'.

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

Subproblem 1

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

Subproblem 2

Set the factor '(1 + -7n)' equal to zero and attempt to solve: Simplifying 1 + -7n = 0 Solving 1 + -7n = 0 Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -7n = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7n = 0 + -1 -7n = 0 + -1 Combine like terms: 0 + -1 = -1 -7n = -1 Divide each side by '-7'. n = 0.1428571429 Simplifying n = 0.1428571429

Solution

n = {-2, 0.1428571429}

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