3x^2-56=13x

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Solution for 3x^2-56=13x equation:


Simplifying
3x2 + -56 = 13x

Reorder the terms:
-56 + 3x2 = 13x

Solving
-56 + 3x2 = 13x

Solving for variable 'x'.

Reorder the terms:
-56 + -13x + 3x2 = 13x + -13x

Combine like terms: 13x + -13x = 0
-56 + -13x + 3x2 = 0

Factor a trinomial.
(-8 + -3x)(7 + -1x) = 0

Subproblem 1

Set the factor '(-8 + -3x)' equal to zero and attempt to solve: Simplifying -8 + -3x = 0 Solving -8 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -3x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -3x = 0 + 8 -3x = 0 + 8 Combine like terms: 0 + 8 = 8 -3x = 8 Divide each side by '-3'. x = -2.666666667 Simplifying x = -2.666666667

Subproblem 2

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

Solution

x = {-2.666666667, 7}

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