5n^2+49=42n

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Solution for 5n^2+49=42n equation:


Simplifying
5n2 + 49 = 42n

Reorder the terms:
49 + 5n2 = 42n

Solving
49 + 5n2 = 42n

Solving for variable 'n'.

Reorder the terms:
49 + -42n + 5n2 = 42n + -42n

Combine like terms: 42n + -42n = 0
49 + -42n + 5n2 = 0

Factor a trinomial.
(7 + -5n)(7 + -1n) = 0

Subproblem 1

Set the factor '(7 + -5n)' equal to zero and attempt to solve: Simplifying 7 + -5n = 0 Solving 7 + -5n = 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 + -5n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5n = 0 + -7 -5n = 0 + -7 Combine like terms: 0 + -7 = -7 -5n = -7 Divide each side by '-5'. n = 1.4 Simplifying n = 1.4

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 = {1.4, 7}

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