(5x-4)(4x+6)=0

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Solution for (5x-4)(4x+6)=0 equation:


Simplifying
(5x + -4)(4x + 6) = 0

Reorder the terms:
(-4 + 5x)(4x + 6) = 0

Reorder the terms:
(-4 + 5x)(6 + 4x) = 0

Multiply (-4 + 5x) * (6 + 4x)
(-4(6 + 4x) + 5x * (6 + 4x)) = 0
((6 * -4 + 4x * -4) + 5x * (6 + 4x)) = 0
((-24 + -16x) + 5x * (6 + 4x)) = 0
(-24 + -16x + (6 * 5x + 4x * 5x)) = 0
(-24 + -16x + (30x + 20x2)) = 0

Combine like terms: -16x + 30x = 14x
(-24 + 14x + 20x2) = 0

Solving
-24 + 14x + 20x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-12 + 7x + 10x2) = 0

Factor a trinomial.
2((-3 + -2x)(4 + -5x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-3 + -2x)' equal to zero and attempt to solve: Simplifying -3 + -2x = 0 Solving -3 + -2x = 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 + -2x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -2x = 0 + 3 -2x = 0 + 3 Combine like terms: 0 + 3 = 3 -2x = 3 Divide each side by '-2'. x = -1.5 Simplifying x = -1.5

Subproblem 2

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

Solution

x = {-1.5, 0.8}

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