2n^2-9n=-7

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Solution for 2n^2-9n=-7 equation:


Simplifying
2n2 + -9n = -7

Reorder the terms:
-9n + 2n2 = -7

Solving
-9n + 2n2 = -7

Solving for variable 'n'.

Reorder the terms:
7 + -9n + 2n2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + -9n + 2n2 = 0

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

Subproblem 1

Set the factor '(1 + -1n)' equal to zero and attempt to solve: Simplifying 1 + -1n = 0 Solving 1 + -1n = 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 + -1n = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1n = 0 + -1 -1n = 0 + -1 Combine like terms: 0 + -1 = -1 -1n = -1 Divide each side by '-1'. n = 1 Simplifying n = 1

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 = {1, 3.5}

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