3x^2-4x-5=3x-1

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Solution for 3x^2-4x-5=3x-1 equation:


Simplifying
3x2 + -4x + -5 = 3x + -1

Reorder the terms:
-5 + -4x + 3x2 = 3x + -1

Reorder the terms:
-5 + -4x + 3x2 = -1 + 3x

Solving
-5 + -4x + 3x2 = -1 + 3x

Solving for variable 'x'.

Reorder the terms:
-5 + 1 + -4x + -3x + 3x2 = -1 + 3x + 1 + -3x

Combine like terms: -5 + 1 = -4
-4 + -4x + -3x + 3x2 = -1 + 3x + 1 + -3x

Combine like terms: -4x + -3x = -7x
-4 + -7x + 3x2 = -1 + 3x + 1 + -3x

Reorder the terms:
-4 + -7x + 3x2 = -1 + 1 + 3x + -3x

Combine like terms: -1 + 1 = 0
-4 + -7x + 3x2 = 0 + 3x + -3x
-4 + -7x + 3x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-4 + -7x + 3x2 = 0

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

Divide each side by '3'.
-1.333333333 + -2.333333333x + x2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.
-1.333333333 + -2.333333333x + 1.333333333 + x2 = 0 + 1.333333333

Reorder the terms:
-1.333333333 + 1.333333333 + -2.333333333x + x2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000
0.000000000 + -2.333333333x + x2 = 0 + 1.333333333
-2.333333333x + x2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333
-2.333333333x + x2 = 1.333333333

The x term is -2.333333333x.  Take half its coefficient (-1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
-2.333333333x + 1.361111112 + x2 = 1.333333333 + 1.361111112

Reorder the terms:
1.361111112 + -2.333333333x + x2 = 1.333333333 + 1.361111112

Combine like terms: 1.333333333 + 1.361111112 = 2.694444445
1.361111112 + -2.333333333x + x2 = 2.694444445

Factor a perfect square on the left side:
(x + -1.166666667)(x + -1.166666667) = 2.694444445

Calculate the square root of the right side: 1.6414763

Break this problem into two subproblems by setting 
(x + -1.166666667) equal to 1.6414763 and -1.6414763.

Subproblem 1

x + -1.166666667 = 1.6414763 Simplifying x + -1.166666667 = 1.6414763 Reorder the terms: -1.166666667 + x = 1.6414763 Solving -1.166666667 + x = 1.6414763 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = 1.6414763 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = 1.6414763 + 1.166666667 x = 1.6414763 + 1.166666667 Combine like terms: 1.6414763 + 1.166666667 = 2.808142967 x = 2.808142967 Simplifying x = 2.808142967

Subproblem 2

x + -1.166666667 = -1.6414763 Simplifying x + -1.166666667 = -1.6414763 Reorder the terms: -1.166666667 + x = -1.6414763 Solving -1.166666667 + x = -1.6414763 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = -1.6414763 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = -1.6414763 + 1.166666667 x = -1.6414763 + 1.166666667 Combine like terms: -1.6414763 + 1.166666667 = -0.474809633 x = -0.474809633 Simplifying x = -0.474809633

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.808142967, -0.474809633}

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