(x-9)(4x-3)=0

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Solution for (x-9)(4x-3)=0 equation:


Simplifying
(x + -9)(4x + -3) = 0

Reorder the terms:
(-9 + x)(4x + -3) = 0

Reorder the terms:
(-9 + x)(-3 + 4x) = 0

Multiply (-9 + x) * (-3 + 4x)
(-9(-3 + 4x) + x(-3 + 4x)) = 0
((-3 * -9 + 4x * -9) + x(-3 + 4x)) = 0
((27 + -36x) + x(-3 + 4x)) = 0
(27 + -36x + (-3 * x + 4x * x)) = 0
(27 + -36x + (-3x + 4x2)) = 0

Combine like terms: -36x + -3x = -39x
(27 + -39x + 4x2) = 0

Solving
27 + -39x + 4x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + -4x)(9 + -1x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {0.75, 9}

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