4x^2-8x=x^2+16

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Solution for 4x^2-8x=x^2+16 equation:


Simplifying
4x2 + -8x = x2 + 16

Reorder the terms:
-8x + 4x2 = x2 + 16

Reorder the terms:
-8x + 4x2 = 16 + x2

Solving
-8x + 4x2 = 16 + x2

Solving for variable 'x'.

Reorder the terms:
-16 + -8x + 4x2 + -1x2 = 16 + x2 + -16 + -1x2

Combine like terms: 4x2 + -1x2 = 3x2
-16 + -8x + 3x2 = 16 + x2 + -16 + -1x2

Reorder the terms:
-16 + -8x + 3x2 = 16 + -16 + x2 + -1x2

Combine like terms: 16 + -16 = 0
-16 + -8x + 3x2 = 0 + x2 + -1x2
-16 + -8x + 3x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-16 + -8x + 3x2 = 0

Factor a trinomial.
(-4 + -3x)(4 + -1x) = 0

Subproblem 1

Set the factor '(-4 + -3x)' equal to zero and attempt to solve: Simplifying -4 + -3x = 0 Solving -4 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -3x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -3x = 0 + 4 -3x = 0 + 4 Combine like terms: 0 + 4 = 4 -3x = 4 Divide each side by '-3'. x = -1.333333333 Simplifying x = -1.333333333

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-1.333333333, 4}

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