(9x-4)(3x+5)=

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Solution for (9x-4)(3x+5)= equation:


Simplifying
(9x + -4)(3x + 5) = 0

Reorder the terms:
(-4 + 9x)(3x + 5) = 0

Reorder the terms:
(-4 + 9x)(5 + 3x) = 0

Multiply (-4 + 9x) * (5 + 3x)
(-4(5 + 3x) + 9x * (5 + 3x)) = 0
((5 * -4 + 3x * -4) + 9x * (5 + 3x)) = 0
((-20 + -12x) + 9x * (5 + 3x)) = 0
(-20 + -12x + (5 * 9x + 3x * 9x)) = 0
(-20 + -12x + (45x + 27x2)) = 0

Combine like terms: -12x + 45x = 33x
(-20 + 33x + 27x2) = 0

Solving
-20 + 33x + 27x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -3x)(4 + -9x) = 0

Subproblem 1

Set the factor '(-5 + -3x)' equal to zero and attempt to solve: Simplifying -5 + -3x = 0 Solving -5 + -3x = 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 + -3x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -3x = 0 + 5 -3x = 0 + 5 Combine like terms: 0 + 5 = 5 -3x = 5 Divide each side by '-3'. x = -1.666666667 Simplifying x = -1.666666667

Subproblem 2

Set the factor '(4 + -9x)' equal to zero and attempt to solve: Simplifying 4 + -9x = 0 Solving 4 + -9x = 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 + -9x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -9x = 0 + -4 -9x = 0 + -4 Combine like terms: 0 + -4 = -4 -9x = -4 Divide each side by '-9'. x = 0.4444444444 Simplifying x = 0.4444444444

Solution

x = {-1.666666667, 0.4444444444}

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