9x^2+4=20x

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Solution for 9x^2+4=20x equation:


Simplifying
9x2 + 4 = 20x

Reorder the terms:
4 + 9x2 = 20x

Solving
4 + 9x2 = 20x

Solving for variable 'x'.

Reorder the terms:
4 + -20x + 9x2 = 20x + -20x

Combine like terms: 20x + -20x = 0
4 + -20x + 9x2 = 0

Factor a trinomial.
(2 + -9x)(2 + -1x) = 0

Subproblem 1

Set the factor '(2 + -9x)' equal to zero and attempt to solve: Simplifying 2 + -9x = 0 Solving 2 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -9x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -9x = 0 + -2 -9x = 0 + -2 Combine like terms: 0 + -2 = -2 -9x = -2 Divide each side by '-9'. x = 0.2222222222 Simplifying x = 0.2222222222

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {0.2222222222, 2}

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