(x-3)[(x-3)+(2x+9)]=9[9+(3x+2)]

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


Simplifying
(x + -3)[(x + -3) + (2x + 9)] = 9[9 + (3x + 2)]

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

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

Remove parenthesis around (-3 + x)
(-3 + x)[-3 + x + (2x + 9)] = 9[9 + (3x + 2)]

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

Remove parenthesis around (9 + 2x)
(-3 + x)[-3 + x + 9 + 2x] = 9[9 + (3x + 2)]

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

Combine like terms: -3 + 9 = 6
(-3 + x)[6 + x + 2x] = 9[9 + (3x + 2)]

Combine like terms: x + 2x = 3x
(-3 + x)[6 + 3x] = 9[9 + (3x + 2)]

Multiply (-3 + x) * [6 + 3x]
(-3[6 + 3x] + x[6 + 3x]) = 9[9 + (3x + 2)]
([6 * -3 + 3x * -3] + x[6 + 3x]) = 9[9 + (3x + 2)]
([-18 + -9x] + x[6 + 3x]) = 9[9 + (3x + 2)]
(-18 + -9x + [6 * x + 3x * x]) = 9[9 + (3x + 2)]
(-18 + -9x + [6x + 3x2]) = 9[9 + (3x + 2)]

Combine like terms: -9x + 6x = -3x
(-18 + -3x + 3x2) = 9[9 + (3x + 2)]

Reorder the terms:
-18 + -3x + 3x2 = 9[9 + (2 + 3x)]

Remove parenthesis around (2 + 3x)
-18 + -3x + 3x2 = 9[9 + 2 + 3x]

Combine like terms: 9 + 2 = 11
-18 + -3x + 3x2 = 9[11 + 3x]
-18 + -3x + 3x2 = [11 * 9 + 3x * 9]
-18 + -3x + 3x2 = [99 + 27x]

Solving
-18 + -3x + 3x2 = 99 + 27x

Solving for variable 'x'.

Reorder the terms:
-18 + -99 + -3x + -27x + 3x2 = 99 + 27x + -99 + -27x

Combine like terms: -18 + -99 = -117
-117 + -3x + -27x + 3x2 = 99 + 27x + -99 + -27x

Combine like terms: -3x + -27x = -30x
-117 + -30x + 3x2 = 99 + 27x + -99 + -27x

Reorder the terms:
-117 + -30x + 3x2 = 99 + -99 + 27x + -27x

Combine like terms: 99 + -99 = 0
-117 + -30x + 3x2 = 0 + 27x + -27x
-117 + -30x + 3x2 = 27x + -27x

Combine like terms: 27x + -27x = 0
-117 + -30x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-39 + -10x + x2) = 0

Factor a trinomial.
3((-3 + -1x)(13 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(13 + -1x)' equal to zero and attempt to solve: Simplifying 13 + -1x = 0 Solving 13 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + -1x = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1x = 0 + -13 -1x = 0 + -13 Combine like terms: 0 + -13 = -13 -1x = -13 Divide each side by '-1'. x = 13 Simplifying x = 13

Solution

x = {-3, 13}

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