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

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


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

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

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

Multiply (-5 + 4x) * (6 + 5x)
(-5(6 + 5x) + 4x * (6 + 5x)) = 0
((6 * -5 + 5x * -5) + 4x * (6 + 5x)) = 0
((-30 + -25x) + 4x * (6 + 5x)) = 0
(-30 + -25x + (6 * 4x + 5x * 4x)) = 0
(-30 + -25x + (24x + 20x2)) = 0

Combine like terms: -25x + 24x = -1x
(-30 + -1x + 20x2) = 0

Solving
-30 + -1x + 20x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-6 + -5x)(5 + -4x) = 0

Subproblem 1

Set the factor '(-6 + -5x)' equal to zero and attempt to solve: Simplifying -6 + -5x = 0 Solving -6 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -5x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -5x = 0 + 6 -5x = 0 + 6 Combine like terms: 0 + 6 = 6 -5x = 6 Divide each side by '-5'. x = -1.2 Simplifying x = -1.2

Subproblem 2

Set the factor '(5 + -4x)' equal to zero and attempt to solve: Simplifying 5 + -4x = 0 Solving 5 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -4x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -4x = 0 + -5 -4x = 0 + -5 Combine like terms: 0 + -5 = -5 -4x = -5 Divide each side by '-4'. x = 1.25 Simplifying x = 1.25

Solution

x = {-1.2, 1.25}

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