3x^2=-8x+128

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Solution for 3x^2=-8x+128 equation:


Simplifying
3x2 = -8x + 128

Reorder the terms:
3x2 = 128 + -8x

Solving
3x2 = 128 + -8x

Solving for variable 'x'.

Reorder the terms:
-128 + 8x + 3x2 = 128 + -8x + -128 + 8x

Reorder the terms:
-128 + 8x + 3x2 = 128 + -128 + -8x + 8x

Combine like terms: 128 + -128 = 0
-128 + 8x + 3x2 = 0 + -8x + 8x
-128 + 8x + 3x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
-128 + 8x + 3x2 = 0

Factor a trinomial.
(-8 + -1x)(16 + -3x) = 0

Subproblem 1

Set the factor '(-8 + -1x)' equal to zero and attempt to solve: Simplifying -8 + -1x = 0 Solving -8 + -1x = 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 + -1x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1x = 0 + 8 -1x = 0 + 8 Combine like terms: 0 + 8 = 8 -1x = 8 Divide each side by '-1'. x = -8 Simplifying x = -8

Subproblem 2

Set the factor '(16 + -3x)' equal to zero and attempt to solve: Simplifying 16 + -3x = 0 Solving 16 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + -3x = 0 + -16 Combine like terms: 16 + -16 = 0 0 + -3x = 0 + -16 -3x = 0 + -16 Combine like terms: 0 + -16 = -16 -3x = -16 Divide each side by '-3'. x = 5.333333333 Simplifying x = 5.333333333

Solution

x = {-8, 5.333333333}

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