9x=4x^2-9

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Solution for 9x=4x^2-9 equation:


Simplifying
9x = 4x2 + -9

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

Solving
9x = -9 + 4x2

Solving for variable 'x'.

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

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

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

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

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

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 2

Set the factor '(3 + 4x)' equal to zero and attempt to solve: Simplifying 3 + 4x = 0 Solving 3 + 4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 4x = 0 + -3 4x = 0 + -3 Combine like terms: 0 + -3 = -3 4x = -3 Divide each side by '4'. x = -0.75 Simplifying x = -0.75

Solution

x = {3, -0.75}

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