(x)2+6x+9=(2x-3)(x+3)

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Solution for (x)2+6x+9=(2x-3)(x+3) equation:


Simplifying
(x) * 2 + 6x + 9 = (2x + -3)(x + 3)

Reorder the terms for easier multiplication:
2x + 6x + 9 = (2x + -3)(x + 3)

Reorder the terms:
9 + 2x + 6x = (2x + -3)(x + 3)

Combine like terms: 2x + 6x = 8x
9 + 8x = (2x + -3)(x + 3)

Reorder the terms:
9 + 8x = (-3 + 2x)(x + 3)

Reorder the terms:
9 + 8x = (-3 + 2x)(3 + x)

Multiply (-3 + 2x) * (3 + x)
9 + 8x = (-3(3 + x) + 2x * (3 + x))
9 + 8x = ((3 * -3 + x * -3) + 2x * (3 + x))
9 + 8x = ((-9 + -3x) + 2x * (3 + x))
9 + 8x = (-9 + -3x + (3 * 2x + x * 2x))
9 + 8x = (-9 + -3x + (6x + 2x2))

Combine like terms: -3x + 6x = 3x
9 + 8x = (-9 + 3x + 2x2)

Solving
9 + 8x = -9 + 3x + 2x2

Solving for variable 'x'.

Reorder the terms:
9 + 9 + 8x + -3x + -2x2 = -9 + 3x + 2x2 + 9 + -3x + -2x2

Combine like terms: 9 + 9 = 18
18 + 8x + -3x + -2x2 = -9 + 3x + 2x2 + 9 + -3x + -2x2

Combine like terms: 8x + -3x = 5x
18 + 5x + -2x2 = -9 + 3x + 2x2 + 9 + -3x + -2x2

Reorder the terms:
18 + 5x + -2x2 = -9 + 9 + 3x + -3x + 2x2 + -2x2

Combine like terms: -9 + 9 = 0
18 + 5x + -2x2 = 0 + 3x + -3x + 2x2 + -2x2
18 + 5x + -2x2 = 3x + -3x + 2x2 + -2x2

Combine like terms: 3x + -3x = 0
18 + 5x + -2x2 = 0 + 2x2 + -2x2
18 + 5x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
18 + 5x + -2x2 = 0

Factor a trinomial.
(9 + -2x)(2 + x) = 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 '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {4.5, -2}

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