x^2-5-4x^2=-8x

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Solution for x^2-5-4x^2=-8x equation:


Simplifying
x2 + -5 + -4x2 = -8x

Reorder the terms:
-5 + x2 + -4x2 = -8x

Combine like terms: x2 + -4x2 = -3x2
-5 + -3x2 = -8x

Solving
-5 + -3x2 = -8x

Solving for variable 'x'.

Reorder the terms:
-5 + 8x + -3x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
-5 + 8x + -3x2 = 0

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

Subproblem 1

Set the factor '(-5 + 3x)' equal to zero and attempt to solve: Simplifying -5 + 3x = 0 Solving -5 + 3x = 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 + 3x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 3x = 0 + 5 3x = 0 + 5 Combine like terms: 0 + 5 = 5 3x = 5 Divide each side by '3'. x = 1.666666667 Simplifying x = 1.666666667

Subproblem 2

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

Solution

x = {1.666666667, 1}

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