3x^2=85+2x

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Solution for 3x^2=85+2x equation:


Simplifying
3x2 = 85 + 2x

Solving
3x2 = 85 + 2x

Solving for variable 'x'.

Reorder the terms:
-85 + -2x + 3x2 = 85 + 2x + -85 + -2x

Reorder the terms:
-85 + -2x + 3x2 = 85 + -85 + 2x + -2x

Combine like terms: 85 + -85 = 0
-85 + -2x + 3x2 = 0 + 2x + -2x
-85 + -2x + 3x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-85 + -2x + 3x2 = 0

Factor a trinomial.
(-5 + -1x)(17 + -3x) = 0

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

Subproblem 2

Set the factor '(17 + -3x)' equal to zero and attempt to solve: Simplifying 17 + -3x = 0 Solving 17 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-17' to each side of the equation. 17 + -17 + -3x = 0 + -17 Combine like terms: 17 + -17 = 0 0 + -3x = 0 + -17 -3x = 0 + -17 Combine like terms: 0 + -17 = -17 -3x = -17 Divide each side by '-3'. x = 5.666666667 Simplifying x = 5.666666667

Solution

x = {-5, 5.666666667}

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