3x^2+128=4x^2+8x

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Solution for 3x^2+128=4x^2+8x equation:


Simplifying
3x2 + 128 = 4x2 + 8x

Reorder the terms:
128 + 3x2 = 4x2 + 8x

Reorder the terms:
128 + 3x2 = 8x + 4x2

Solving
128 + 3x2 = 8x + 4x2

Solving for variable 'x'.

Reorder the terms:
128 + -8x + 3x2 + -4x2 = 8x + 4x2 + -8x + -4x2

Combine like terms: 3x2 + -4x2 = -1x2
128 + -8x + -1x2 = 8x + 4x2 + -8x + -4x2

Reorder the terms:
128 + -8x + -1x2 = 8x + -8x + 4x2 + -4x2

Combine like terms: 8x + -8x = 0
128 + -8x + -1x2 = 0 + 4x2 + -4x2
128 + -8x + -1x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
128 + -8x + -1x2 = 0

Factor a trinomial.
(8 + -1x)(16 + x) = 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 + x)' equal to zero and attempt to solve: Simplifying 16 + x = 0 Solving 16 + x = 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 + x = 0 + -16 Combine like terms: 16 + -16 = 0 0 + x = 0 + -16 x = 0 + -16 Combine like terms: 0 + -16 = -16 x = -16 Simplifying x = -16

Solution

x = {8, -16}

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