3x(2x-5)=2(3x-2)

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


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

Reorder the terms:
3x(-5 + 2x) = 2(3x + -2)
(-5 * 3x + 2x * 3x) = 2(3x + -2)
(-15x + 6x2) = 2(3x + -2)

Reorder the terms:
-15x + 6x2 = 2(-2 + 3x)
-15x + 6x2 = (-2 * 2 + 3x * 2)
-15x + 6x2 = (-4 + 6x)

Solving
-15x + 6x2 = -4 + 6x

Solving for variable 'x'.

Reorder the terms:
4 + -15x + -6x + 6x2 = -4 + 6x + 4 + -6x

Combine like terms: -15x + -6x = -21x
4 + -21x + 6x2 = -4 + 6x + 4 + -6x

Reorder the terms:
4 + -21x + 6x2 = -4 + 4 + 6x + -6x

Combine like terms: -4 + 4 = 0
4 + -21x + 6x2 = 0 + 6x + -6x
4 + -21x + 6x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
4 + -21x + 6x2 = 0

Begin completing the square.  Divide all terms by
6 the coefficient of the squared term: 

Divide each side by '6'.
0.6666666667 + -3.5x + x2 = 0

Move the constant term to the right:

Add '-0.6666666667' to each side of the equation.
0.6666666667 + -3.5x + -0.6666666667 + x2 = 0 + -0.6666666667

Reorder the terms:
0.6666666667 + -0.6666666667 + -3.5x + x2 = 0 + -0.6666666667

Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000
0.0000000000 + -3.5x + x2 = 0 + -0.6666666667
-3.5x + x2 = 0 + -0.6666666667

Combine like terms: 0 + -0.6666666667 = -0.6666666667
-3.5x + x2 = -0.6666666667

The x term is -3.5x.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5x + 3.0625 + x2 = -0.6666666667 + 3.0625

Reorder the terms:
3.0625 + -3.5x + x2 = -0.6666666667 + 3.0625

Combine like terms: -0.6666666667 + 3.0625 = 2.3958333333
3.0625 + -3.5x + x2 = 2.3958333333

Factor a perfect square on the left side:
(x + -1.75)(x + -1.75) = 2.3958333333

Calculate the square root of the right side: 1.547847968

Break this problem into two subproblems by setting 
(x + -1.75) equal to 1.547847968 and -1.547847968.

Subproblem 1

x + -1.75 = 1.547847968 Simplifying x + -1.75 = 1.547847968 Reorder the terms: -1.75 + x = 1.547847968 Solving -1.75 + x = 1.547847968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 1.547847968 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 1.547847968 + 1.75 x = 1.547847968 + 1.75 Combine like terms: 1.547847968 + 1.75 = 3.297847968 x = 3.297847968 Simplifying x = 3.297847968

Subproblem 2

x + -1.75 = -1.547847968 Simplifying x + -1.75 = -1.547847968 Reorder the terms: -1.75 + x = -1.547847968 Solving -1.75 + x = -1.547847968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -1.547847968 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -1.547847968 + 1.75 x = -1.547847968 + 1.75 Combine like terms: -1.547847968 + 1.75 = 0.202152032 x = 0.202152032 Simplifying x = 0.202152032

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.297847968, 0.202152032}

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