20x^2-4=-11x

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Solution for 20x^2-4=-11x equation:


Simplifying
20x2 + -4 = -11x

Reorder the terms:
-4 + 20x2 = -11x

Solving
-4 + 20x2 = -11x

Solving for variable 'x'.

Reorder the terms:
-4 + 11x + 20x2 = -11x + 11x

Combine like terms: -11x + 11x = 0
-4 + 11x + 20x2 = 0

Factor a trinomial.
(-4 + -5x)(1 + -4x) = 0

Subproblem 1

Set the factor '(-4 + -5x)' equal to zero and attempt to solve: Simplifying -4 + -5x = 0 Solving -4 + -5x = 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 + -5x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -5x = 0 + 4 -5x = 0 + 4 Combine like terms: 0 + 4 = 4 -5x = 4 Divide each side by '-5'. x = -0.8 Simplifying x = -0.8

Subproblem 2

Set the factor '(1 + -4x)' equal to zero and attempt to solve: Simplifying 1 + -4x = 0 Solving 1 + -4x = 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 + -4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4x = 0 + -1 -4x = 0 + -1 Combine like terms: 0 + -1 = -1 -4x = -1 Divide each side by '-4'. x = 0.25 Simplifying x = 0.25

Solution

x = {-0.8, 0.25}

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