3x^2+8x=28

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Solution for 3x^2+8x=28 equation:


Simplifying
3x2 + 8x = 28

Reorder the terms:
8x + 3x2 = 28

Solving
8x + 3x2 = 28

Solving for variable 'x'.

Reorder the terms:
-28 + 8x + 3x2 = 28 + -28

Combine like terms: 28 + -28 = 0
-28 + 8x + 3x2 = 0

Factor a trinomial.
(-14 + -3x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-14 + -3x)' equal to zero and attempt to solve: Simplifying -14 + -3x = 0 Solving -14 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -3x = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -3x = 0 + 14 -3x = 0 + 14 Combine like terms: 0 + 14 = 14 -3x = 14 Divide each side by '-3'. x = -4.666666667 Simplifying x = -4.666666667

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-4.666666667, 2}

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