3(x^2+2x-9)=33-x(x+2)

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Solution for 3(x^2+2x-9)=33-x(x+2) equation:


Simplifying
3(x2 + 2x + -9) = 33 + -1x(x + 2)

Reorder the terms:
3(-9 + 2x + x2) = 33 + -1x(x + 2)
(-9 * 3 + 2x * 3 + x2 * 3) = 33 + -1x(x + 2)
(-27 + 6x + 3x2) = 33 + -1x(x + 2)

Reorder the terms:
-27 + 6x + 3x2 = 33 + -1x(2 + x)
-27 + 6x + 3x2 = 33 + (2 * -1x + x * -1x)
-27 + 6x + 3x2 = 33 + (-2x + -1x2)

Solving
-27 + 6x + 3x2 = 33 + -2x + -1x2

Solving for variable 'x'.

Reorder the terms:
-27 + -33 + 6x + 2x + 3x2 + x2 = 33 + -2x + -1x2 + -33 + 2x + x2

Combine like terms: -27 + -33 = -60
-60 + 6x + 2x + 3x2 + x2 = 33 + -2x + -1x2 + -33 + 2x + x2

Combine like terms: 6x + 2x = 8x
-60 + 8x + 3x2 + x2 = 33 + -2x + -1x2 + -33 + 2x + x2

Combine like terms: 3x2 + x2 = 4x2
-60 + 8x + 4x2 = 33 + -2x + -1x2 + -33 + 2x + x2

Reorder the terms:
-60 + 8x + 4x2 = 33 + -33 + -2x + 2x + -1x2 + x2

Combine like terms: 33 + -33 = 0
-60 + 8x + 4x2 = 0 + -2x + 2x + -1x2 + x2
-60 + 8x + 4x2 = -2x + 2x + -1x2 + x2

Combine like terms: -2x + 2x = 0
-60 + 8x + 4x2 = 0 + -1x2 + x2
-60 + 8x + 4x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-60 + 8x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-15 + 2x + x2) = 0

Factor a trinomial.
4((-5 + -1x)(3 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 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 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -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 = {-5, 3}

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