(2x+9)(x-3)=0

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Solution for (2x+9)(x-3)=0 equation:


Simplifying
(2x + 9)(x + -3) = 0

Reorder the terms:
(9 + 2x)(x + -3) = 0

Reorder the terms:
(9 + 2x)(-3 + x) = 0

Multiply (9 + 2x) * (-3 + x)
(9(-3 + x) + 2x * (-3 + x)) = 0
((-3 * 9 + x * 9) + 2x * (-3 + x)) = 0
((-27 + 9x) + 2x * (-3 + x)) = 0
(-27 + 9x + (-3 * 2x + x * 2x)) = 0
(-27 + 9x + (-6x + 2x2)) = 0

Combine like terms: 9x + -6x = 3x
(-27 + 3x + 2x2) = 0

Solving
-27 + 3x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -2x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-9 + -2x)' equal to zero and attempt to solve: Simplifying -9 + -2x = 0 Solving -9 + -2x = 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 + -2x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2x = 0 + 9 -2x = 0 + 9 Combine like terms: 0 + 9 = 9 -2x = 9 Divide each side by '-2'. x = -4.5 Simplifying x = -4.5

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-4.5, 3}

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