(3x)*(3x)-1=(3x-1)(2x+5)

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Solution for (3x)*(3x)-1=(3x-1)(2x+5) equation:


Simplifying
(3x)(3x) + -1 = (3x + -1)(2x + 5)

Remove parenthesis around (3x)
3x(3x) + -1 = (3x + -1)(2x + 5)

Remove parenthesis around (3x)
3x * 3x + -1 = (3x + -1)(2x + 5)

Reorder the terms for easier multiplication:
3 * 3x * x + -1 = (3x + -1)(2x + 5)

Multiply 3 * 3
9x * x + -1 = (3x + -1)(2x + 5)

Multiply x * x
9x2 + -1 = (3x + -1)(2x + 5)

Reorder the terms:
-1 + 9x2 = (3x + -1)(2x + 5)

Reorder the terms:
-1 + 9x2 = (-1 + 3x)(2x + 5)

Reorder the terms:
-1 + 9x2 = (-1 + 3x)(5 + 2x)

Multiply (-1 + 3x) * (5 + 2x)
-1 + 9x2 = (-1(5 + 2x) + 3x * (5 + 2x))
-1 + 9x2 = ((5 * -1 + 2x * -1) + 3x * (5 + 2x))
-1 + 9x2 = ((-5 + -2x) + 3x * (5 + 2x))
-1 + 9x2 = (-5 + -2x + (5 * 3x + 2x * 3x))
-1 + 9x2 = (-5 + -2x + (15x + 6x2))

Combine like terms: -2x + 15x = 13x
-1 + 9x2 = (-5 + 13x + 6x2)

Solving
-1 + 9x2 = -5 + 13x + 6x2

Solving for variable 'x'.

Reorder the terms:
-1 + 5 + -13x + 9x2 + -6x2 = -5 + 13x + 6x2 + 5 + -13x + -6x2

Combine like terms: -1 + 5 = 4
4 + -13x + 9x2 + -6x2 = -5 + 13x + 6x2 + 5 + -13x + -6x2

Combine like terms: 9x2 + -6x2 = 3x2
4 + -13x + 3x2 = -5 + 13x + 6x2 + 5 + -13x + -6x2

Reorder the terms:
4 + -13x + 3x2 = -5 + 5 + 13x + -13x + 6x2 + -6x2

Combine like terms: -5 + 5 = 0
4 + -13x + 3x2 = 0 + 13x + -13x + 6x2 + -6x2
4 + -13x + 3x2 = 13x + -13x + 6x2 + -6x2

Combine like terms: 13x + -13x = 0
4 + -13x + 3x2 = 0 + 6x2 + -6x2
4 + -13x + 3x2 = 6x2 + -6x2

Combine like terms: 6x2 + -6x2 = 0
4 + -13x + 3x2 = 0

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

Subproblem 1

Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 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 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {0.3333333333, 4}

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