(n-7)(n-3)=0

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Solution for (n-7)(n-3)=0 equation:


Simplifying
(n + -7)(n + -3) = 0

Reorder the terms:
(-7 + n)(n + -3) = 0

Reorder the terms:
(-7 + n)(-3 + n) = 0

Multiply (-7 + n) * (-3 + n)
(-7(-3 + n) + n(-3 + n)) = 0
((-3 * -7 + n * -7) + n(-3 + n)) = 0
((21 + -7n) + n(-3 + n)) = 0
(21 + -7n + (-3 * n + n * n)) = 0
(21 + -7n + (-3n + n2)) = 0

Combine like terms: -7n + -3n = -10n
(21 + -10n + n2) = 0

Solving
21 + -10n + n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(3 + -1n)(7 + -1n) = 0

Subproblem 1

Set the factor '(3 + -1n)' equal to zero and attempt to solve: Simplifying 3 + -1n = 0 Solving 3 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1n = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1n = 0 + -3 -1n = 0 + -3 Combine like terms: 0 + -3 = -3 -1n = -3 Divide each side by '-1'. n = 3 Simplifying n = 3

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 = {3, 7}

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