(9x+1)(4x-1)=0

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Solution for (9x+1)(4x-1)=0 equation:


Simplifying
(9x + 1)(4x + -1) = 0

Reorder the terms:
(1 + 9x)(4x + -1) = 0

Reorder the terms:
(1 + 9x)(-1 + 4x) = 0

Multiply (1 + 9x) * (-1 + 4x)
(1(-1 + 4x) + 9x * (-1 + 4x)) = 0
((-1 * 1 + 4x * 1) + 9x * (-1 + 4x)) = 0
((-1 + 4x) + 9x * (-1 + 4x)) = 0
(-1 + 4x + (-1 * 9x + 4x * 9x)) = 0
(-1 + 4x + (-9x + 36x2)) = 0

Combine like terms: 4x + -9x = -5x
(-1 + -5x + 36x2) = 0

Solving
-1 + -5x + 36x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-1 + -9x)' equal to zero and attempt to solve: Simplifying -1 + -9x = 0 Solving -1 + -9x = 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 + -9x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -9x = 0 + 1 -9x = 0 + 1 Combine like terms: 0 + 1 = 1 -9x = 1 Divide each side by '-9'. x = -0.1111111111 Simplifying x = -0.1111111111

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 = {-0.1111111111, 0.25}

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